Why so itchy?

I just got off bv medication a few days ago and had sex, my partner came in me but we were drunk and we used caramel infused vodka whipped cream to spice things up while I gave him head he washed his penis and then we had sex ever since then my vagina has been so itchy :/ I have no foul discharge or smell it’s just really itchy at times not all the time though, anyone know what it could be?