Am I allergic to his semen?

Dear Rebecca,

Every time my boyfriend ejaculates in my mouth I end up with a sore and itchy throat for a few days. A friend told me I might be allergic to his semen. Is this possible? If so, what do I do about it? We use a condom for any penetration, so not sure how his semen might affect my vagina.



Hi Karen,

Thank you for your email. If you’ve not had this problem before and it happens each time he ejaculates in your mouth, it is possible you are allergic to his semen. This condition is known as seminal plasma hypersensitivity. It could also just be that he’s going too deep and irritating the back of your throat.

There are a few different things you could try to see what’s causing it and then to deal with it. Ask him to be a bit gentler and to not hit the back of your throat. This might help on it’s own. You could also try not swallowing his semen. I know that takes some of the fun out of things, but it could stop your sore throats. Also, you could try giving him a blowjob with a condom on.

Check that he’s not eating anything that you are allergic to. It’s possible that traces of it are in his semen and causing you to have a reaction.

If none of these things help, I would suggest seeing your GP. They might be able to test you and give you a definite diagnosis and suggest a way forward.

With love,



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