Sore vagina!!

Hi all,

So I need some advice about an embarrassing issue. My boyfriend and I had sex last week and he went down on me also fingered me which we don’t do too often.. my vagina has been burning and swollen and irritated all week!! Help lol could I be allergic to something on his fingers?? I only say that because we have both been together for years STD tested negative for everything that was very recently. It was something my doctor did before an iud!

Its so sore :(