But since there is doubt and you have apparently been sexually exposed to herpes, you might want to have a blood test for
HSV-2 infection; then you'll know for
sure. See numerous other messages on this forum about the proper HSV blood tests.
4) MC is a benign (if frustrating) condition; because it isn't at all serious, almost no research has been done. We just can't say how infectious it is. However, it's not a super-common STD, so my guess is that it isn't very efficiently transmitted.