About 3 weeks ago I lost my virginity to my boyfriend. I was due a week ago and my period just came today. It started off this morning where I went to the bathroom and a lot of blood was in the toilet, and was happy because I had been freaking out all week. I put a tampon in, and took it out about 40 min later and it was what it would normally be. I put another one in and it was lighter than normal. I put a pad on and there has been almost nothing.. When we had sex, he pulled out early and we used a condom so I very much doubt I am. Of course I have been stressing out since it happened and I know that can cause a change in your periods as well. Can I have some insight??