Pregnancy week by week · First trimester
4 weeks pregnant: what's happening
Implantation may be happening, and your body may begin producing the hormone detected by pregnancy tests. You may feel different, or nothing at all. A home pregnancy test may become positive around the time of your expected period, though later positive results are also common.
What's ahead
Early embryonic development accelerates, and symptoms or a positive test may appear.
A memory to keep this week
The first positive test or first suspicion
Write it down while it's fresh. In the app, each week has gentle prompts like this one, saved privately to your story.
In the app this week
Try this together: Capture the beginning, plus this week's memory prompts, a private journal and your Journey. One simple idea at a time, never 47.
Based on: NHS week-by-week guide to pregnancy, written in Brittany's words.
Every pregnancy and every baby is different. This is general, educational information, not medical advice. If something worries you, check with your provider or pediatrician.
