irritation/burning after sex?!

Halie • pregnant with baby #1👶in love with my best friend💞 cat mom of 3😻

Soooo I'm 8 weeks pregnant. my boyfriend and I have sex 4 or 5 times a week. some less bc of the neasuea.. Every time we have sex, I have irritation/burning in my vagina.. it's usually after I pee but it lasts for a couple hours afterwards. we don't use condoms and he doesnt pull out.. I've noticed it more and more since we started TTC. any idea what it could be or what could be causing it?