I'm 17 and I just started having sex about two or three months ago. My period last month was one day late. The day after it ended my boyfriend and I had sex and we always use condoms, and we've probably had sex four times since then. My period is now four days late and a day after I was late I took a first response pregnancy test. It said I'm not pregnant. Previous to this (a week before) I had dark brown secretions for about two days. And this week, when I should have been on my period I wiped myself and it was a tad pink like it would be when I normally start then it stopped in less than two days. Yesterday I when I wiped myself dark red blood came out, then brown like dried blood and then it stopped after an hour, then just now I started to bleed again. And if it helps I have nt been feeling any pregnancy symptoms and that day we had sex after my period ended he fingered me in the back of his car a large amount of blood came out from him being rough I suppose and I lightly bled for about two or three days and it stopped.