Can i have sex the last day of my period and still get pregnant?

Doubtful/improbable: not impossible: usually it is quite difficult and in fact, rare, to get pregnant on your cycle;however, in my career I have seen this occur. Usually this happens when cycles are irregular, or there have been multiple unprotected sexual penetratrations with ejaculation. I doubt that you would get pregnant; however if you miss a cycle, get a pregnancy test.

V unlikely: you ovulate 14 days BEFORE your period and can get pregnant 24 hrs before to 48 hrs after ovulation--so you cannot get pregnant--unless by some strange coincidence you ovulate mid-cycle--v unlikely