Your index value falls into false positive. Usually when you have hsv1 the test picks some odd proteins and shows low positive like yours for hsv2. Since you are negative for hsv1 it could be real positive for hsv2 but I doubt it. I would suggest to wait 12 weeks since exposure and get another igg test, if it is over 3.5 than it’s conclusive, if it’s less than that, I would consider it negative if you don’t have any leassions. You can get western blot to be sure, but you have to wait 12 weeks so it can be accurate. 4 weeks is too early to say, I know the waiting game it’s not fun, igg is fairly available and cheep, like $60-$70 no doctors appointment needed, there are online std websites that provide it, so you can get it at 8 weeks as well and see if it increases significantly or not for your peace of mind.