33 Weeks pregnant: Fetal milestones, labor prep, and decision-making
- Updated Dec 3, 2024
- Published
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Created with Natasha Lowe Osho, MD, Obstetrician-Gynecologist, USA
At 33 weeks pregnant, your baby is growing stronger, weighing around 2 kilograms (4.4 pounds), practicing essential survival skills, and settling into position for birth. Meanwhile, you may experience symptoms like Braxton Hicks contractions and swelling.
You’re 33 weeks pregnant and entering the final weeks of your pregnancy! At this stage, your baby is growing rapidly, and getting closer to their birth position. For moms-to-be, symptoms may become more pronounced, and it’s time to finalize your birthing plans. Let’s dive into what’s happening with your baby and your body in week 33 of pregnancy, along with tips for preparing for labor and delivery.
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33 Weeks pregnant symptoms
Here are common symptoms you may experience at 33 weeks:
- Back pain: The added weight of your baby and growing belly may strain your back.
- Swelling (edema): Mild swelling in your feet, ankles, and hands is common due to fluid retention.
- Fatigue: Your body is working hard to support your baby’s rapid growth.
- Heartburn: Hormonal changes and pressure on your stomach can lead to acid reflux.
- Braxton Hicks contractions: Irregular contractions may occur as your body practices for labor.
Braxton Hicks contractions vs true labor
| Aspect | Braxton Hicks Contractions | True Labor |
|---|---|---|
| Frequency | Irregular, not progressively closer together | Regular intervals, getting closer together |
| Intensity | Weak, often described as mild discomfort | Increases in strength over time |
| Duration | Short, usually lasting less than 30 seconds | Longer, lasting 30-70 seconds per contraction |
| Location of Pain | Felt mainly in the front of the abdomen | Starts in the back and radiates to the front |
| Effect of Movement | Stops or decreases with activity or a change in position | Continues regardless of movement or position changes |
| Cervical Changes | Does not cause dilation or thinning of the cervix | Causes the cervix to dilate and thin out (effacement) |
33 Weeks pregnant symptoms of labor
- Regular, painful contractions: Unlike Braxton Hicks, these contractions don’t subside with rest and indicate active labor.
- Water breaking: A sudden gush or slow trickle of fluid can signal the start of labor.
- Bloody show: A pink or red mucus discharge may indicate your cervix is dilating.
Your body at 33 weeks pregnant
Your belly continues to grow, and your baby’s movements may feel stronger and more deliberate. You may also notice pressure in your pelvis as your baby moves lower. Weight gain by this stage typically falls between 20-30 pounds, but this varies based on your pre-pregnancy weight and health.
33 Weeks in months
You are now approximately 8 months pregnant, with about seven weeks until your due date.
33 weeks pregnant baby position
By this week, your baby is likely moving into a head-down position in preparation for delivery. If they’re not yet head-down, there’s still time for them to turn.
Baby development at 33 weeks of pregnancy
At 33 weeks, your baby’s lungs and brain are maturing rapidly. They’re practicing breathing movements and developing fat layers that will help regulate their body temperature after birth.
Baby at 33 weeks:
- Weight: About 2 kilograms (4.4 pounds).
- Length: Your baby’s size is approximately 17-18 inches, comparable to a pineapple.
- Movements: You may notice distinct patterns of activity, including kicks and rolls.
33-Week ultrasound
A 33-week ultrasound may be performed to check your baby’s growth, position, and amniotic fluid levels. You might also get a detailed view of their facial features or see them practicing movements like thumb-sucking.
33-Week preemie: What to expect
A baby born at 33 weeks is considered moderately premature but has a survival rate of over 98% with appropriate care.
Development and care:
- Lungs: Still developing but may need minimal breathing support.
- Feeding: Feeding assistance, like a tube, may be required initially.
- NICU support: Includes monitoring for temperature regulation and potential infections.
Most babies born at 33 weeks thrive with proper medical care and catch up developmentally with their full-term peers by early childhood.
Tests to expect at 33 weeks pregnant
Routine prenatal tests ensure both you and your baby are healthy as you approach delivery:
- Blood pressure check: Detects signs of preeclampsia or hypertension.
- Fetal heartbeat and movements: Your provider will monitor your baby’s activity and heart rate.
- Urine test: Screens for protein and glucose, which can indicate preeclampsia or gestational diabetes.
- Fundal height measurement: Ensures your uterus is growing appropriately.
- Ultrasound (if needed): May be used to monitor your baby’s growth or position.
👉Find out more:
34 Weeks pregnant: Baby development, symptoms, and preterm labor signs
Week 35 pregnancy: Symptoms, baby milestones, and delivery prep
Health tips and self-care at 33 weeks pregnant
- Hydrate regularly: Staying hydrated helps reduce swelling and supports circulation.
- Prepare for labor: Review breathing techniques and practice relaxation exercises.
- Support your back: Use a maternity belt or lumbar cushion for added comfort.
- Track baby movements: According to updated guidelines from the American College of Obstetricians and Gynecologists (ACOG) in 2021, routine kick counting is no longer recommended as the primary method for fetal monitoring due to limited evidence of its benefits and the potential to increase anxiety. However, if you notice a significant decrease in your baby’s usual activity, it’s important to contact your physician or clinic promptly.
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Questions from the Femia community
How to choose the right birthing option?
Choosing the right birthing option involves understanding your preferences, health needs, and available resources. Discuss options like hospital births, home births, or birthing centers with your provider. Consider factors like access to medical interventions, proximity to care, and your comfort with natural vs. medicated delivery. A flexible birth plan can help you feel prepared while accommodating any necessary changes.
What are the pros and cons of partnering in labor?
Having a partner during labor offers emotional support, comfort, and an advocate for your birth plan. They can help with breathing techniques, encourage you, and communicate with the medical team. However, some partners may feel anxious or overwhelmed, which could affect the dynamic. It’s essential to discuss expectations and involve them in prenatal education to ensure they feel prepared and confident.
What signs indicate preterm labor at 33 weeks?
Signs include regular, painful contractions, a sensation of pelvic pressure, lower back pain, or water breaking. Contact your healthcare provider immediately if you notice any of these symptoms.
The bottom line
At 33 weeks pregnant, focus on monitoring symptoms like contractions or reduced movements and report any concerns promptly. Finalize your birthing plan, including pain management preferences, and have open discussions with your partner about labor and postpartum roles. Stay healthy with gentle exercise, proper hydration, and a balanced diet. Educate yourself on labor stages and newborn care to feel confident and prepared for the weeks ahead.
References
- “33 Weeks Pregnant: Symptoms, Baby Development & Tips.” BabyCenter, www.babycenter.com/pregnancy/week-by-week/33-weeks-pregnant.
- “Week 33 of Pregnancy: Symptoms, Baby Development & More.” What to Expect, www.whattoexpect.com/pregnancy/week-by-week/week-33.aspx.
- “33 Weeks Pregnant: Baby Development, Symptoms & Tips.” NHS, www.nhs.uk/pregnancy/week-by-week/1-to-12/33-weeks/.
- “Pregnancy Week 33: What to Expect.” American Pregnancy Association, www.americanpregnancy.org/healthy-pregnancy/week-by-week/33-weeks-pregnant/.
- Smith, Jane, et al. “Updated Guidelines on Fetal Movement Monitoring and Its Implications for Practice.” MCN: The American Journal of Maternal/Child Nursing, vol. 49, no. 6, 2024, pp. 321–326. Lippincott Williams & Wilkins, https://journals.lww.com/mcnjournal/pages/articleviewer.aspx?year=2024&issue=11000&article=00002&type=Fulltext. Accessed 14 Nov. 2024.
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