I'M PREGNANT MAYBE

I go to a boarding school with boys and girls. There's one boy who I feel I'm in love with. He told me he loves me and that we should try sex. At first, I said no and said we should take it slow. We started off by kissing, and then he fingered me and I gave him a handjob and a blowjob. Then, I had sex with him. It was amazing and his penis was the perfect size. I lost it in his dorm room. We take baths together. I'm afraid the advisors know. Am I pregnant?? I took a pregnancy test and it came out positive and then another negative but Im bleeding which I think is my period?? HELP?!