Help please

Me and my boyfriend were fooling around when we both decided to try actually doing it. We were both afraid so we only put the tip in and it felt really dry but he still did anyway and he kept rubbing up against it I don't know if there was precum I really can't tell. Plus my fertile window is open and I'm freaking out. I don't have the money for contraceptives. Is there still a chance that I'm possibly pregnant?