How soon after intercourse do you notice pregnancy signs?

Most fertility experts will tell you that you won't have any pregnancy signs or symptoms until the embryo implants in the uterus. This can happen about the time you miss your period but for most women, pregnancy signs & symptoms will not kick in noticeably until you are 6 weeks pregnant (about 2 weeks after you miss your period). Some women don't have any pregnancy signs or symptoms except for a missed period! Anecdotally, many women who have posted on the internet & have discussed pregnancy signs & symptoms will tell you that they knew right away or a few days before their periods were due. If you are very in tune with your body, you may notice small changes right away. However, remember, most of the early pregnancy signs & symptoms are very similar to premenstrual symptoms and it is often difficult to know the difference until you miss a period.