1) should I request a test for mgen or ureaplasma?
I don’t believe that you do. Certainly not for ureaplasma
2) there have been 2 or 3 occasions where after I masturbated, the tip of my penis seemed to look blotchy and red with rash like spots. Looked irritated. The spots were not raised, not liquid filled, and not blisters. Just skin color differences. Didn’t itch or hurt. For all I know this happens more frequently and I’ve never noticed. They lasted maybe a few hours and by morning it looks completely normal. Have you ever heard of that, is that friction from the act, would herpes or any other std come about right after masturbating and then disappear by the next day?
It would not behave in that way.
I think it is likely time to let this worry about HSV go. Do you?
Terri