Hello, Welcome to HCM, After going through your history this seems strong possibility of genital herpes which is caused by Herpes simplex virus that is type I and Type II. Due to unprotected sexual exposure. Infection can occur with out visible lesions. You should visit a Dermatologist and get examined and tested for herpes and take proper antiviral drugs that can shorten outbreaks and make them less severe or even stop them from happening. Antiviral drug like acyclovir, valacyclovir and famciclovir can be taken after consulting your doctor.There are ointment of these drugs which reduce pain and healing time. If possible other partner should be treated. Practice safe sex as it protects from sexually transmitted disease. Thank you.