I fear that I'm suffering from a staph infection. I had unprotected sex with my girlfriend for the first time and a day later she gets a UTI and Bladder infection. She has never had one until now. She was prescribed antibiotics and given a shot, then a week or two later her symptoms continue. She went back in for more tests and she was given a new antibiotic and given another shot. The test came back and it says she has staph in her urine. I feel like I am responsible and every time she is cleared up, me having unprotected sex with her brings it back. On my chest I have had pimple like bumps dating back a few years. Could this be staph? Could I have gotten staph from living on that boat? I read that MRSA Bacterium can be caused by living near water on the west coast. I lived on that moldy boat 2 months and now I continue to live on a new boat. I have been experiencing chest pains for some time now on the left side of my chest. Could I have blood poisoning? From what I understand staph enters through your nostril. Could breathing that moldy boat have caused a deadly disease?