Intimate allergies are rare but unfortunately exist. They can be to latex, lubricants, perfumes contained in the intimate wipes or worse, to the sexual secretions. They cause most of the time redness, itching, intense but brief, which appear a few minutes after intercourse. The best thing to do if you see that happen to you is to consult a doctor as soon as possible who will prescribe further examination and possibly soothing remedies.
Depending on your allergy, alternatives are possible. For example, latex allergy, prefer non-latex condoms that are now commonplace, and do not forget that female condoms are fully nitrile!