A typical human pregnancy lasts 40 weeks, but most parents know this number is only a rough estimate. Babies are born on a seemingly unpredictable timeline, with a normal pregnancy ranging from 38 ...

In fact, about two-thirds of early pregnancy losses are caused ... After implantation, your body starts producing the pregnancy hormone human chorionic gonadotropin (hCG), which is detected ...

Early symptoms of pregnancy ... during the first trimester due to your human chorionic gonadotropin (hCG) levels. HCG is a hormone produced during pregnancy that's made by cells formed in the ...