My boyfriend and I had sex on the last day of my period (wasn't really bleeding anymore just spotting here and there). He was wearing a condom and came while he was inside me. When he took it out his condom partially slipped (it didn't fully go away and wasn't stuck inside) and he saw something white on the edge(we didn't have a lot of light so it could've been a reflection). Is there any chance I could get pregnant? I know there could be some chance but did it happen to anyone else and does someone have any idea what could have happened.