Hello, thanks for using health care magic i have read your query with a lot of concern. the first thing you should understand is that any unprotected intercourse is a potential risk for sexually transmissible infections. Some sexually transmissible infections are latent i.e. stay without indicating symptoms but could be transmitted from one person to the other. As concerns you, painful urination is a symptom of urinary tract infection. It could have been sexually transmitted or the sexual intercourse could have facilitated the transmission. You need to do a urine analysis, and other tests such as vaginal smear etc. Hope this helps Dr Achuo