Help ?!?

So every time I have sex with my boyfriend which isn’t often cause it’s long distance it leaves a smell and like I leak feels like discharge but to watery like pee and I often have to stop mid sex cause the pain gets to bad he like to go rounds so like 3 or 4 round I have to tap out due to pain last time we had sex it was like a pee smell this time it was Kinda fishy but not it was just a smell I wasn’t use to having and I been taking probiotics and since he’s left I no longer have a smell but this same thing happen last time