My boyfriend and I were nude grinding about 2 weeks ago. We had just had sex but he did not ejaculate because the condom was too tight. He wanted to c*m, but we were out of condoms, so we decided to grind without clothes on. There were a couple instances where his penis got caught in the opening of my vagina. It did not even enter me completely, and he pulled out in a second. He also did not finish, but I am worried about the prec*m. He says he knows there was no prec*m, and we have grinded without clothes on with no complications before, but I have been experiencing brown discharge for the past 2 days and I am starting to get worried. My period is not regular; I usually get it about every 6 weeks or so and I am not due for my period for a few more weeks. We did it a few weeks after my last period ended, so I was not ovulating. Although the chances of pregnancy are probably slim, I am desperate for some input. Anything would be greatly appreciated!!