Your baby this week
You did it — trimester one is done! Your baby has all the major organs and systems in place now. Your baby can curl those toes, make sucking movements, and can even feel when you gently touch your belly. The intestines are moving into the tummy, and the pituitary gland is producing hormones. If you could see the profile, you'd recognize a tiny nose, chin, and forehead — a little you (or papa).
Your body this week
Congratulations — you've made it through the first trimester! The risk of miscarriage drops significantly after this milestone. Many couples choose this week to share their pregnancy news. Nausea should be fading (though it lingers for some). Your uterus is rising above your pelvic bone, and you may start showing. Energy is slowly returning — the second trimester is often called the 'golden period.' You've earned this moment.
Common symptoms this week
Every pregnancy is different — you may notice some of these, all of them, or none at all. None of this is a checklist to worry over.
- Fading nausea
- A first hint of a bump
- Energy slowly returning
- Occasional lingering queasiness
This week’s checklist
- NT scan if not yet done (window closes around 13+6 weeks)
- Share pregnancy news with family and friends if you're ready!
- If you are working, talk to your HR department about your maternity leave entitlements early
- Collect your MCP (Mother & Child Protection) card from your health facility — carry it to every visit
- Start researching childbirth education classes
- Celebrate — you've completed trimester one!
What’s normal this week
Most of what you’re feeling is your body doing exactly what it should — the everyday symptoms don’t need a call. The signs below are the rare exceptions: noticing one doesn’t mean something’s wrong, just that it’s worth a quick check.
When to call your doctor
- Bleeding or fluid leakage
- Persistent severe nausea continuing into second trimester
- Abnormal screening results (your doctor will guide next steps)
This guide offers general information for a typical pregnancy and is not a substitute for personalised medical advice. Always follow your doctor or midwife’s guidance for your situation.
Frequently asked questions
How big is my baby at 12 weeks pregnant?
At 12 weeks pregnant, your baby is about the size of a plum.
What are common symptoms at 12 weeks pregnant?
Common symptoms around 12 weeks pregnant include fading nausea, a first hint of a bump, energy slowly returning, occasional lingering queasiness. Every pregnancy is different — you may notice some of these, all of them, or none at all.
What is developing at 12 weeks pregnant?
You did it — trimester one is done! Your baby has all the major organs and systems in place now.
When should I call my doctor at 12 weeks pregnant?
Call your doctor at 12 weeks if you notice bleeding or fluid leakage, persistent severe nausea continuing into second trimester, abnormal screening results (your doctor will guide next steps).
Last updated June 2026
References
Ovyacare’s guidance is written in-house and aligned with leading medical authorities: