You can try using Lignocaine gel avilable OTC as Topicaine gel. This is a mild anesthetic and will help to numb the pain sensations. But this will also decrease the sensations of enjoyment from the sexual intercourse.
A mild burning may occur immediately after application . Wait for about 10 minutes after application to have sex.
But it will be best if you were to consult a gynecologist for a thorough examination to rule out any causes in the vagina which is causing the severe pain during sex.
I hope this helps.
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