TTC Or BV

Today was my first day that it’s a high chance of conceiving (per this app). Well we’ve been doing it and he’s been doing what he’s suppose to do. I thought that I had BV because of the fish smell, after he finishes in me. Well according to the research I’ve been doing and not having BV, im trying to figure out if the sperm healthy & working. Is that what causes the smell? Or is it just his scent?

Ladies what do you think? Anyone else having this problem?