Itchy after sex?

Lauren

My boyfriend was a virgin before I met him. I was not. I have been tested for STDs prior to the relationship and was clear. Every time we have sex without a condom my vagina gets itchy.. an STD is out of the question..is it possible I’m allergic to his cum? However he doesn’t cum inside me, always pulls out. When I swallow nothing happens. No itchy throat etc.

Any ideas? He definitely isn’t cheating on me, definitely was a virgin.