What if i had sex with the guy before my period which was middle of april and he didnt nut in me but after april 14 like april 23 i jad sex with another guy i had unprotected sex now im pregnant.who could be the dad though?

It only takes one sperm (in semen, all the time) to trigger pregnancy and it has been documented from exposure at any day of a cycle including during menses. While it seems more likely #2, this becomes a legal issue and you could get a big surprise at birth. You can have a NIPS test at 8-10 weeks and compare the findings to known men to find the answer.