TL;DR
- The third trimester ushers in significant physical and emotional changes, and your baby also develops at a rapid pace.
- Common symptoms include pelvic pressure, frequent urination, constipation, exhaustion, leg cramps, stretch marks, etc.
- Changes in the fetus include an increase in length and weight, as well as brain and sensory development, lung maturation, and fat deposition.
- You can manage third-trimester symptoms with massage, warm showers, pillows, fiber-rich foods, moderate exercise, hydration, and other supportive measures.
- Avoid excessive heat exposure, alcohol, drugs, smoking, raw foods, travelling after 36 weeks, or vigorous exercise.
Third Trimester Guide for Mothers
Going through the third trimester is like running the last stretch of your pregnancy marathon. During weeks 28 to 40, not only does the little one inside you develop rapidly, but your body also gears up for labor and delivery.
Hence, besides shopping for baby clothes and toys and packing the hospital bag, you must navigate emotional rollercoasters and physical discomforts. Fortunately, this guide makes it easier by highlighting the common symptoms during the third trimester weeks and how to manage them.
We will also explore the nitty-gritties of fetal development during this time and what to avoid for a safe childbirth.
Third Trimester of Pregnancy: Common Symptoms
Our experienced physicians at Almara Women’s Health have observed that women experience the following symptoms during the third trimester of pregnancy:
- Braxton-Hicks contractions: Mild, irregular uterine contractions often called “practice contractions.”
- True labor signs: Regular, painful contractions, rupture of membranes (water breaking), and vaginal discharge mixed with blood and mucus (bloody show).
- Pelvic pressure and back pain: Caused by the baby’s weight and position pressing on the pelvis and spine.
- Indigestion and heartburn: As the growing uterus presses on the stomach, it pushes acids upward, causing heartburn or indigestion.
- Shortness of breath: The growing uterus pushes against the diaphragm, reducing lung expansion.
- Frequent urination: Increased pressure on the bladder stimulates the urge to urinate often.
- Palpitations or rapid heart rate: A mild increase in heart rate is normal because blood may take longer to return to the heart as the uterus expands, but persistent palpitations require a medical evaluation.
- Constipation: Slower digestion and hormonal changes reduce bowel movement frequency.
- Swelling (edema): Mild swelling in hands, feet, and ankles occurs due to fluid retention.
- Leg cramps: Poor circulation or mineral deficiencies (such as calcium and magnesium) can trigger leg cramps.
- Leucorrhea (increased vaginal discharge): Clear or white discharge is normal, but bloody, green, or foul-smelling discharge needs attention.
- Spider veins, varicose veins, and hemorrhoids: Increased blood volume and vein pressure cause these changes.
- Colostrum leakage: The breasts may start producing a yellowish, pre-milk fluid in preparation for breastfeeding.
- Carpal tunnel syndrome: Fluid retention compresses wrist nerves, causing tingling or numbness in the hands.
- Fetal movements: Kicks may feel fewer but stronger, as space in the uterus becomes limited.
How the Fetus Develops During the Third Trimester?
During this final stretch of pregnancy, your baby grows and matures rapidly to embrace life in the world outside. Here’s what happens:
- Length and weight: A fetus is generally 19 to 21 inches in length by full term, and the weight ranges from 6 to 9 pounds.
- Deposition of fat: The accumulation of subcutaneous fat helps the little one to control their post-delivery body temperature and develop smooth skin.
- Position: By 32 to 36 weeks, most fetuses transition to a vertex (head-down) position. In some scenarios, the head drops into the pelvic region.
- Brain development: During the third trimester of pregnancy, your baby’s brain grows rapidly and becomes more complex. The number of neural connections also surges.
- Maturation of lungs: The number of alveoli (air sacs) shoots up in fetal lungs so that the baby can breathe right from birth.
- Development of senses: The third trimester is when the baby begins to hear and respond to voices and sounds. Their sleep-wake cycles become more stable, and the little one can open and close their eyes.
- Immunity: Your antibodies reach the fetus via the placenta, which ensures your baby gets immune support from early on.
- Change in movement: Though the total space available for the fetus decreases during this trimester, their movements become stronger, though less frequent.
- Vernix and lanugo: The protective fetal skin coating (vernix) decreases but is retained by creases. The lanugo (soft, fine hair) starts to fall off.
Tips to Manage Third Trimester Symptoms
Comfort and safety are a priority during the third trimester weeks for your sake as well as the baby’s. So, try these strategies:
- Pillows: Use pillows under your baby bump and between your knees while sleeping to ensure physical comfort and smooth blood circulation. Also, turn to the left when you lie down. A pregnancy wedge can also help with alignment.
- Supportive gear: Since you are carrying a lot of weight, buy footwear with wide toe boxes and cushioned insoles. Use a maternity support belt to alleviate backache and compression stockings to manage varicose veins.
- Eat small meals frequently: Try to have five or six small meals at regular intervals to minimize heartburn. Avoid spicy or fatty foods and take a short walk or sit up after eating instead of lying down immediately.
- Fiber and fluids: To ease constipation during the third trimester, increase fiber intake and stay well-hydrated. Consult your doctor to determine if you require supplements.
- Kegels: These exercises strengthen your pelvic floor and help you better control your bladder. Kegels also ease the road to labor.
- Balanced nutrition: Based on your gynecologist’s advice, take prenatal vitamins and minerals regularly. Ensure meals are balanced and include all major food groups. Drink enough water to help minimize swelling and cramping.
- Fetal kick count: Every day, track fetal kicks or movements and contact your healthcare provider if the count suddenly seems low.
- Emotional preparation: By the end of 36 weeks, get your hospital bag packed. Sign up for childbirth classes for a better mental and physical state. Also, share worries with loved ones or a counselor to ward off insomnia and anxiety.
What to Avoid During the Third Trimester?
Here’s what not to do during the third trimester of pregnancy for a safe delivery and both maternal and fetal well-being:
- Travelling after 36 weeks, especially if you have had complications or the trip is a long one
- Consuming undercooked or raw foods, fish high in mercury, and unpasteurized dairy products
- Lying flat for long on your back, as it can lead to supine hypotension
- Consuming alcohol, taking drugs, and smoking
- Sitting in a sauna, getting into hot tubs, or exposing yourself to high heat
- Taking prescription or over-the-counter medications without consulting your doctor
- Exercising vigorously in very hot conditions without medical approval
Navigate the Third Trimester with Ease
The third trimester may not always be particularly comfortable, with symptoms such as back pain, tiredness, stretch marks, and frequent urination. But it’s also that phase where your baby develops with gusto, and you prepare to meet them after a long wait is finally over.
Moreover, you can manage many symptoms during the third trimester weeks with balanced meals, moderate exercise, massage, pillows, and more. Along with these self-care measures, having the right OB-GYN by your side ensures proper guidance and a smoother journey through pregnancy and delivery.
Put Your Trust in Almara Clinic for a Safe Pregnancy Journey
Not just your third trimester, but the board-certified OB-GYNs at Almara Women’s Health can help you right from preconception to postpartum. Our caring and experienced doctors provide personalized attention and complete care to make your journey to motherhood smoother.
For expert care, you can visit any of our 10 clinics across the Twin Cities. To spot the clinic closest to you or schedule a consultation, contact Almara. Alternatively, write to info@helloalmara.com for a prompt response.
FAQs
What causes high fetal heart rate in the third trimester?
Also known as fetal distress, this condition might happen due to issues with the placenta, poor oxygen supply, or constriction of the umbilical cord.
When should I call my doctor in the third trimester?
If you experience preterm labor signs, severe headache, sudden abdominal pain, reduced fetal movement, or vision change, call your OB-GYN right away. Also, seek medical attention if you develop a fever higher than 38°C or if your face or hands suddenly swell.
Can I exercise during the third trimester?
Light exercises, such as swimming, walking, or prenatal yoga, are generally safe during this time. However, it is important to consult your healthcare provider first and avoid intense workouts.
How much sleep do you need in the third trimester?
Ideally, you should aim for 8 to 10 hours of sleep for a complete rest. To feel physically as comfortable as possible, use pillows and avoid lying down immediately after eating.
Is the third trimester the most painful?
The third trimester can be uncomfortable for many women due to weight gain, pelvic pressure, backache, sleep disruptions, swollen legs, and so on. However, it’s not necessarily deemed as the most painful.
