12 Weeks Pregnant
Reflexes are developing—baby can open and close fingers!
🧒 Baby's Development This Week
As you reach the end of your first trimester, your baby is now fully formed from head to toe. They are about the size of a plum, and their tiny fingers and toes are no longer webbed. The most exciting development this week is that the baby's kidneys are beginning to produce urine, and they are even starting to make small, spontaneous movements as their nervous system matures.
- Major organ systems are forming.
- Reflexes are developing.
- Facial features become more distinct.
- Bones are hardening.
- Nervous system matures.
🤰 Your Symptoms at Week 12
The good news is that for many women, the intense morning sickness and fatigue of the early weeks start to subside around now. Your uterus has grown to the size of a large grapefruit and is starting to move up out of your pelvis, which might slightly reduce the pressure on your bladder, though you may still feel a bit more tired than usual as your body finishes the massive task of building the placenta.
Rest when possible.
moderate
Eat small, frequent meals.
mild
Wear a supportive bra.
mild
Stay hydrated but limit evening fluids.
moderate
Talk to your partner or friends.
mild
Body Changes
- Uterus is expanding.
- Blood volume is increasing.
- Skin changes may occur.
When to Call Your Doctor
- Severe abdominal pain or cramping
- Heavy bleeding or spotting
- Severe dizziness or fainting
✅ Week 12 Checklist
- Take prenatal vitaminsEssential
- Drink plenty of waterEssential
- Eat a balanced dietRecommended
- Exercise moderatelyRecommended
- RestEssential
❓ Frequently Asked Questions
Sources
- American College of Obstetricians and Gynecologists (ACOG)
- Intergrowth-21st Fetal Growth Standards