Implantation bleeding or broken hymen

So I sort of had sex for the first time Friday. I say sort of because it hurt too bad for him to go in all of the way. We tried a bunch of times but I feel like my hymen or cervix is so low that he could only really get the tip in. He wasn't wearing a condom because I am on birth control and he didn't cum inside of me either. On Sunday I started to bleed brown blood and I had my period a week ago so it would be too soon to have it again. The brown blood started heavy and now it's like a period and slowly becoming more red then brown. It's been three days. I'm really concerned and would really love opinions