The views expressed by me are for educational purposes only and do not establish a doctor patient relationship.
I am Mysticdoc, experienced Internal Medicine Specialist.
I am here to help you with your concerns.
Oral thrush can cause this problem.
Now this may not be oral sex related.
However, vaginal yeast infection can also get transmitted through oral sex.
one possibility is as above.
another possibility can be due to the recent antibiotic use.
unless the partner had yeast infection.
the oral fungus can be identified from the fungal culture.
yes Nystatin mouth wash commonly used.
yes that will.
no the yeast infection can also affect the groin.
Another possibility can be from the sweating.