What could be the cause? What can I do to remedy this problem?

Hello, I have a problem with my vagina. Since some sexual relations with my spouse, I feel a discomfort at the level of the urinary meatus and around. It's hot. I consulted a doctor who confirmed that everything seems normal. I also did the tests for sexually transmitted diseases and everything is correct on this side. I have no pain when I urinate. My partner and I have been together for 3 years. We do not use any contraception except for withdrawal. I have been using a vagisil intimate cleanser for years and have never had a problem before.