possibly pregnant intercourse question tmi photo

I think I am possibly pregnant. my period is usually every 45-50 days it's been 56. I had very very barely noticeable bleeding (picture attached) when me and my husband have sex his penis is so sensitive he can't even go more then a minute without finishing. he thinks I'm pregnant ( I did take a test but negative this was 2 days after the bleeding) which the last day I bled was Wednesday last week. again barely noticeable even when I wiped nothing there...it was up in there.

could I be pregnant and that's why he's so sensitive ????