While I was away on business my Girlfriend had a friend of hers stay at our flat long story short this women has multiple Sexually transmitted diseases. It has come to my attention that while my girlfriend friend stayed at my abode. Said women used my private bathroom and personal hygienic products bar soap ,razor, that i use to shave my chest and personal towel. I was unaware that my personal items were used and have develop a rash on my lower abdomen and upper chest that consists of small red dots to larger rectangular blotches whatever it is it s spreading. I am wondering if I contracted a std from this women using my person items particlarly my razor.