So my friend and I got together and I gave him oral sex with out any problems. Than I gave him oral sex twice in one night. He than got a yeast infection from it mind you we have not had sex and he has not givingme oral sex. He thought he had herpes but it  wasn't I have been tested for everything including herpes. Than after that I gave him oral again nothing happen. Than about a week later  I gave him oral again he tells me nindays later that he got another rash not like the yeast infection so I went and got the work at my obgyn plus bolld tests including herpes test.I've never had herpes on my mouth or in my mouth nothing I brush and rinse before I even go over there. I've never been with an uncircumsied man. So I asked question and read on line some things. Like he should wash really well after oral sex so he will not get this rash I am hoping this works. It's been a week and 4 days the last time I asked if he was ok was Oct 4 he said every thing was good. Now when I he did not answer back. I am worried that it happen again. What should I do? Should I ask again or just leave it alone. Last time he waited to tell me till I ask  to see him to tell me. What shoul I do? And how do I stop the rash after oral sex?