pregnant or paranoid??

I don't know if this is the right place for this type of question but I need advice. On April 29th I had sex with my boyfriend. In the beginning it was with a condom. I gave him a blowjob but I never made him finish. We messed around(not sexually) and then we had unprotected sex. I was on my 5th day of my period and he never finished inside me. Is there a chance I could get pregnant with "precum" while on my period? Or am I just being paranoid?