Okay, so first, breathe.
The herpes IgM is a TERRIBLE test, and shouldn't be done on adults. That is as likely to be wrong as it is right, so act like you didn't even have that test done.
The CDC recommends that the IgM test not be done.
Now, the IgG. At a 1.33, there is about an 85% chance that's a false positive. Most experts - and the CDC - believe that anything under a 3.5 needs to be confirmed with a different type of test because there's a good chance it's a false positive.
However, at 4 days post encounter, the IgG test shows nothing from that. I don't even think you're developing antibodies or anything - at 4 days, it's just too soon. Some people just test in that low positive range.
If you are still afraid it's herpes, test again in a few months. It can take up to 4 months to show positive on an IgG. Most do by 6 weeks - the minimum is probably 2 weeks, and that's rare.
In the meantime, if you get any sores or blisters, get your doctor to culture those as soon as possible. If you can get that done within 48 hours of a sore appearing, it is far more likely to be an accurate result.
So hang in there. No matter what happens, you'll be okay. :)