Back to Definitions

First Trimester

Roughly the first 12 weeks of pregnancy. This is calculated from the first day of your last period so in weeks 1 and 2 of your pregnancy you aren’t actually pregnant. Ovulation usually happens around day 14 of your cycle, so by the time you miss a period you will be around 4 weeks pregnant, 2 weeks post fertilisation.

We would love you to join our community.

Receive a free Hospital Bag Checklist when you sign up to the newsletter

Please select one of the options below

/ /
/ /
We use cookies and similar technologies to enable services and functionality on our site and to understand your interaction with our service. By clicking on accept, you agree to our use of such technologies for marketing and analytics.