Hi there ~
I understand your concerns. I believe that you have been having this itching sensation for a while now. I think it might be helpful to have anti-itch medications like avil
before you have sex. However the cause of itching seems to be an infection probably fungal which needs to be treated to get rid of the infection. I believe that fluconazole
is an effective medication for this condition and I commonly use it in my practice. I hope this helps. I believe you also need to visit with a doctor if you feel like things are actually getting worse so that the required laboratory tests for any UTIs/STIs are performed and appropriate treatment initiated.
Take care and have a lovely day!