Can u conceive while on your period

Jennifer
Last period May 25th. My husband and I had unprotected sex on May 27th (yes I was on my period...tmi). AF never showed and we had unprotected sex again on July 2nd. I've taken pregnancy tests but they're negative . Is it possible to have gotten pregnant on my period? I have a irregular (32 day cycle length) period all thanks to PCOS. Please help!!