Your pregnancy countdown can get jumbled pretty quickly. Are you 13 weeks pregnant or 14? First trimester or second? Three months pregnant or four? Then there’s figuring out your due date — which, for ...

Discovering you are pregnant is a significant moment. While it is exciting, it is normal to feel a mix of emotions, including ...

Corrections & Clarifications: An earlier version of this story misstated how to calculate pregnancy duration. It has since been updated. If you think there's a chance you might be pregnant, you want ...

Researchers conducted a population-based cohort study using data from the Swedish Medical Birth Register to identify potential risk factors associated with first-time preeclampsia during the second ...