What’s going on ?!?

So yesterday my boyfriend and I had sex but I Wasn’t as wet as usual but we still had sex and afterwards my vagina just started burning so i got up and got ready to go take a shower, I happen to notice white stuff on his penis and on me I assume it’s white discharge... so I took a shower, I’m guessing everything was fine till a couple hours later when I started to get a annoyed irritation/itch down there. And my boyfriend mentioned the tip of his penis was itching too. We talked about what was going on, we both have been with only each other since we started dating 2 and half years ago. Over night I was itching like crazy I couldn’t even sleep so I got up and wiped myself and put on new underwear I don’t know what’s going on and I would really like some answer , any thoughts ?