Aspirin has been shown to have several beneficial effects in humans including its effect on blood platelet aggregation (blood clot formation) and decreasing inflammation. Because of aspirin’s ability to decrease the formation of clots, blood may flow better. As such, aspirin may be helpful in many pregnancy outcomes through its effect on blood flow and reducing clots. Better blood flow at the time of conception and implantation may lead to improved pregnancy outcomes. A medication that improves blood flow to reproductive organs (uterus and ovaries) and throughout the body and may have a role in improving pregnancy and pregnancy outcomes. We want to test whether these known effects of low-dose aspirin may aid women in becoming pregnant and delivering a full-term baby.