Semen allergy

Someone then replied and told me I may be allergic to semen, something I've never heard of! So I googled it, and it seems like I have a lot of the symptoms of a semen allergy.

When we had sex with a condom, I never had this pain. Maybe some days, I'd have a little pain if we went too rough but not as close to the amount of pain I began to have since we started having no condom sex (I went on birth control so we're still protected and STD-free!)

However, it always seems like about a minute or two after he cums inside me, my vagina would start to feel inflamed and burn. And as we would walk or do whatever's after sex, my vagina would hurt so so much to the point I could not walk and it would feel like it's on fire, and swelled up like a balloon. At first, my friend said I could have an STD which is impossible since my partner and I are STD free and haven't shared any needles with anyone. But I still checked with my doctor for any STDs which I came out clean. So I kept wondering why it hurt so much but only after he would cum. I thought maybe it was too salty and I might have cuts inside??? Lol. But anyways, I haven't checked with my allergist about if I'm truly allergic but I think I am! 

Who else has a semen allergy?