Am I pregnant?

I don't know if it's because my nipples are pierced or what but for some reason my nipples are literally sensitive I don't want anyone around my chest it's that bad. & I'm feeling a little bloated also like something is turning inside. (not saying a baby is kicking) & I thought my period was going to come on the 11th but I had very light bleeding (didn't fill the pad) on the 7th and ended on the 9th . my last test I took of course came out negative but that was on the 6th. Could I be pregnant or am I just too into it ?