My period didn't come last month on the end of the month so I thought I was pregnant so I took a test and it came negative so couple days after my miss period then me and my boyfriend had sex and he had nutted in me and I never had took a test after that and I came on my period ( an whole week ) then its been a week or 2 and now I see light pink blood and stomach cramps .... What's does this mean ?? Can I be pregnant or not ?