I Recently Had Unprotected Sex With My Partner And He

I recently had unprotected sex with my partner and he takes hours before he cums and we lasted a minute or 2 and nothing was dripping from me or him but my stomach was hurting afterwards I'm scared I might be pregnant but my partner says he didn't cum in me at all and I don't have any money for a pregnancy test and my period comes the beginning of every month and it hasn't came yet what do I do