So the only girl I've ever been with just got tested for everything under the sun and all the tests came back negative. Our last contact was about 3 months ago and thats when the pain started. No sores or anything as of yet. Just some things are a little redder than usual. But my question is... if it wasn't this girl, where did this come from?

Firstly, getting tested for "everything under the sun" does not usually include a herpes test. STD panels as a general rule exclude this. So unless she said specifically "test me for herpes", she probably didn't get this test.

Secondly - You say you have some pain. That's pretty vague. Have you been tested and/or diagnosed with herpes?? It's a bit premature to react to a virus you don't even know you have.

well I saw a couple doctors and finally got into a urologist and he said "it is most likely herpes" but said its too soon to test me to get any conclusive results. So after I got this news, I told her and she went and specifically got tested for herpes and it was negative.

I don't get where this would have come from.

and now she's accusing me of cheating (which I didn't).

Well, you need to wait 3 - 4 months post exposure to be tested via blood for herpes. If your last contact was 3 months ago, I'd say go for a blood test now so that you can set your mind at ease.

It is possible that you've had herpes for years and years orally, and just didn't know it. Many people get the virus as kids from a relative kissing them. You don't need to cheat on someone to get herpes.