So i had sex with my gf around 2 months back ,then after one drunken hard night of fucking ,the next day it was sore to pee,which got worse over the next few days until it was unbearable too pee,it sort of got better about a week late so we tried fucking again,the next day it was back to being sore and my whole croth area was aching and my groin glands had swollen up..i had all the checks,no sti or anytninhg like that.got given antibiotics,which i dont think done anything and it sorta stopped by itself..well sine then i have had trouble getting/keeping it up ,and cumming real fast..even when masterbating i come strait away which has never happend before..anyone shed some light?anything similar?