Unprotective sex 4 weeks ago - igm negative, hsv igg positive (17.40) - is igg very high for a recent exposure? or i already had it before 4 weeks?

Herpes: Most likely, you had herpes before this encounter and you didn't know it. That's somewhat common-people are infected but don't know their status. These labs show that you've been infected at some time in the past-although there is a difference between HSV1 and HSV2. The first is the 'cold sore' virus that occurs on the lips, the second is 'herpes' that occurs on the genitals. Use condoms 2 be safe