Why does my vagina burn after my boyfriend ejaculates inside of me?
I can’t say for certain, but it’s possible to be allergic to components of your partner’s semen. While uncommon, it should be considered when someone experiences allergic-type reactions after sex.
What are these reactions?
An anaphylaxis-type reaction very soon after intercourse. This includes a range of symptoms like puffy eyes, stuffy nose, itchy body rash, lip swelling, wheezing, nausea and vomiting or diarrhea.
Local skin reaction to semen (case reports are only documented in the vagina, though anal reactions are likely possible; no oral cases have been reported). This includes vaginal itchiness, burning, redness, pain or swelling after sex. A local reaction is usually immediate though it can develop hours later.
A combination of anaphylaxis and local symptoms.
Worried you might have an allergy to semen? One thing to do is try using a condom and see if symptoms improve. Condoms have been shown to protect against semen exposure and allergic reactions. However, if you do have anaphylactic symptoms, it’s best to talk with a doctor about emergency medication—just in case the condom breaks or semen leaks out.
