Ok im new, but here's my predicament. I had unprotected intercourse about two days before my period was supposed to start, but I am also on birth control. But I just switched to a new brand so this is my first pack, and I was off of birth control for a whole month before I started the new one, and when my period came this past month it lasted 10 days, when it usually only lasts 3 to 4. Well now ive finished all of my reminder pills, and im on pill number 2 of the new pack and still no period. Plus my ovaries have been hurting everynow and then, and my breasts are tender. And I had slightly spotted a few days before intercourse, and a little more a few days after which usually means I am going to start. And since there is a pregnancy test one can take a week before menstruating, I took it since im technically late, and it came out negative. All in all, I have no idea if I am or not....Just really scared, and its been 7 days since intercourse, so is it possible to tell since I have not started my period yet?