Fishy smell...??? Ewww

Well a little bit ashamed of this but...

I've been with my fiancee for 2 years, we're TTC, the first 7 months i was on the patch (birth control ) then later we decided we wanted to try to get pregnant.

This whole time I've been with him its been great but lately. ...every time he ejaculate inside of me a few minutes later i started to get a fishy, stinky smell....never happened to me before, he said is my "PH imbalance" Google said that, i just Google it now and everything saids is normal? ....

So is my PH imbalance?

I know i clean that area good because i don't want a bad odor down there, but that is just after sex, PLEASE HELP!!!

Any suggestions?

I can't go to the doctor now, Im on a different state and not possible yet, any suggestions?

THANKS!!!

An update. ...he said is the PH imbalance and i have a lot of acid and the smell is because im killing the sperms??? WTH? So now he said that is why i can't get pregnant! IDK but he is blaming me for that too lol