Trimester Chart

It was always hard to figure out what week belonged to what month and what month belonged to what trimester while I was pregnant. I found this out because there are two ways to calculate how many weeks you are:

Your pregnancy starts the last day of your last full period. This is what most doctors will follow (this one is the common one).
Your pregnancy starts from when you missed your period. This does not include the conception timeframe. Therefore, the first month of pregnancy would start at 5 weeks.

We will be using the 1st method to determine Month/Week on this website to help things stay consistent.

We are not doctors or medical professionals. These are our personal opinions. The information we provide is for educational and entertainment purposes only. We do not accept any responsibility for any liability, loss or risk, personal or otherwise, incurred as a consequence, directly or indirectly, from any information or advice contained here. By using this website you are agreeing to the Terms and Conditions. Mamas Today LLC may earn compensation from affiliate links in this content.