GUIDE
3 Months Pregnant
Published on ·Updated on
Month 3 covers weeks 9 through 13 — the final stretch of the first trimester and a major milestone.
Being 3 months pregnant means you are approaching the end of the first trimester. The embryo is now officially a fetus, morning sickness is beginning to ease, and miscarriage risk drops significantly after week 12. Many people choose this milestone to share their pregnancy news with the world.
Be prepared from day one
“There's a host of reasons why prenatal care is important. The earlier that we can get patients seen, the earlier we can start interventions that can improve these longer-term outcomes.”
What Happens During Month 3
Month 3 of pregnancy (weeks 9-13) marks the transition from embryo to fetus and the end of the highest-risk period for miscarriage. Your baby transforms from looking like a tiny tadpole to a recognizable human form with all major organs in place and functioning.
At week 9, the embryo is officially reclassified as a fetus. External genitalia begin forming, though they are not yet distinguishable on ultrasound. Week 10 is when vital organs are functioning and the NIPT screening window opens.
By week 11, your baby can swallow amniotic fluid and make kicking movements. Week 12 is the milestone many people wait for — miscarriage risk drops to about 1-2% after a confirmed heartbeat. Week 13 wraps up the first trimester with vocal cords forming and fingerprints becoming unique.
| Week | Baby Size | What Is Happening |
|---|---|---|
| Week 9 | Cherry | Embryo becomes a fetus — external genitalia forming |
| Week 10 | Strawberry | Vital organs are functioning — NIPT screening window opens |
| Week 11 | Lime | Baby can swallow and kick — tooth buds forming under gums |
| Week 12 | Plum | Reflexes developing — miscarriage risk drops significantly |
| Week 13 | Lemon | Vocal cords forming — fingerprints becoming unique |
Your Body at 3 Months Pregnant
Month 3 often feels like a turning point. The worst of morning sickness is typically behind you, and the crushing fatigue of the early weeks begins to lift. This improvement is driven by the placenta taking over hormone production from the corpus luteum, stabilizing hormone levels.
Your uterus is about the size of a softball by week 12 and is rising above the pelvic bone. Your provider can feel it during an abdominal exam, and you may notice a slight thickening at your waistline. Most people do not have a visible baby bump yet, though those in second or subsequent pregnancies may show earlier.
This is also when first-trimester screening wraps up. If you opted for the NIPT or nuchal translucency scan, results are typically available during month 3. The dating ultrasound has confirmed your due date, and your prenatal care plan is established.
Common Symptoms at Month 3
- Nausea gradually improving — many people notice real relief by week 12-13
- Increasing energy as fatigue from weeks 6-9 begins to lift
- A slight thickening at the waistline — not yet a visible bump for most
- Reduced breast tenderness compared to the peak at weeks 6-8
- Headaches from hormonal fluctuations
- Dizziness as blood pressure reaches its lowest point around weeks 12-16
- Skin changes — early stretch marks, darkening of the linea alba
- Increased appetite as nausea fades
Symptoms are improving for most people during month 3. If nausea is still severe, talk to your provider.
When to Call Your Doctor
- Vaginal bleeding heavier than light spotting
- Severe or persistent abdominal pain
- Severe headaches with visual changes
- Inability to keep food or fluids down
- Painful or burning urination
Even though miscarriage risk has dropped, always report concerning symptoms to your provider.
Looking Ahead
The second trimester begins at week 14 and is often called the honeymoon phase. At month 4 (weeks 14-17), energy returns, your baby begins hearing sounds, and you may feel the first flutters of movement. For a complete overview of the first 13 weeks, see our first trimester guide.
If you are still waiting on screening results, our NIPT guide explains what to expect and how to interpret the results.
Related Guides
Sources
- American College of Obstetricians and Gynecologists (ACOG) — How your fetus grows during pregnancy
- Mayo Clinic — Fetal development: trimester by trimester
- March of Dimes — Pregnancy month by month
This guide is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider with any questions about your pregnancy.
Frequently asked questions
- When does the first trimester officially end?
- The first trimester ends at 13 weeks 6 days. The second trimester begins at week 14. However, many people colloquially refer to week 12 as the end of the first trimester because it marks the point when miscarriage risk drops substantially and symptoms often begin improving.
- How much does miscarriage risk drop at the end of month 3?
- After a confirmed heartbeat at 12 weeks, the risk of miscarriage drops to about 1-2%. The majority of miscarriages occur before week 10 and are caused by chromosomal abnormalities. Reaching the end of month 3 is a significant and reassuring milestone.
- Will I have a baby bump at 3 months?
- Most first-time mothers do not have a clearly visible bump at 3 months, though the uterus is beginning to rise above the pelvic bone. Bloating can make your midsection appear larger, and tight-waisted clothing may become uncomfortable. People in their second or subsequent pregnancies often show earlier. A noticeable bump typically appears between months 4 and 5.
- When should I announce my pregnancy?
- There is no medically required timeline for announcing your pregnancy. Many people wait until after the 12-week milestone because miscarriage risk has decreased. Others share earlier with close family and friends. Some wait for favorable screening results. The decision is entirely personal.
