I didn't bleed after first intercourse, but I was bleeding later

Ok so me and my boyfriend had sex monday February 2 and he came in me and he took my virginity (but I didn't bleed) then we had sex Wednesday February 4 and he came in me again and I still didn't bleed but on Thursday when I went to the bathroom in the morning I was bleeding a little and now its Saturday and im bleeding a lot to were I have to wear a pad but my period doesn't come on till the third week of every month so am I pregnant or no