Aspirin for the Prevention of Preeclampsia and Pregnancy Outcomes After Assisted Reproductive Technology

This study is testing whether taking low-dose aspirin during the first trimester of pregnancy reduces the risk of preeclampsia (a dangerous high blood pressure complication) in women who became pregnant through assisted reproductive technology (ART) such as IVF or donor egg cycles. Preeclampsia risk may be higher in ART pregnancies. **You may be eligible if...** - You are 18 or older, pregnant for the first time (nulliparous) - Your pregnancy resulted from ART (IVF, ICSI, egg donation, or donor sperm insemination) - You are carrying a single baby - You are between 9 and 14 weeks pregnant - You are covered by French social security **You may NOT be eligible if...** - A major fetal abnormality has been detected - You are already taking regular aspirin or have a condition (like antiphospholipid syndrome) that requires it - You have an allergy to aspirin or NSAIDs, a bleeding disorder, a stomach ulcer, or hemophilia - You are already participating in another interventional study Talk to your doctor to see if this trial is right for you.