Whilst working away recently, I visited a massage parlour. I didn't have full sex, with the prostitute, but instead had two blowjobs, without a condom. At weekends (and now that I am back home full time) I would be having unprotected, full sex, with my wife. My wife has recently started itching a lot, around her vagina and anus. I have also noticed a large red rash under one of my armpits. I have no itching myself, am in no discomfort when I piss. Are these two things a coincidence, or could have I have contracted an Std, and also passed it on to my wife? Your advice is welcome.