Did my girlfriend cheat on me she has genital herpes now?

Zezzara
Please help me serious and I am going through a lot. I will make this as organized as possible.

My girlfriend has genital herpes now. Located below her vagina. She started to feel ill last Monday (7/27) and got the cyst on Wednesday (7/29).

Last time I had sex with her was (7/25) and (7/23).

She got tested (7/30) and got her results via pcr swab test ((most accurate test)8/01)
She has only been with 2 partners sexually the first being a jailbird who managed to take her virginity last year in march (only had sex once) and me (more times than I can count). She also received oral sex from an ex boy friend 3 years ago for the first time but never received oral sex ever again until she met me.
She got tested in may of 2019 and cameback negative. I got tested 6 times in a year because I have a fragile immune system and my ex girlfriend cheated on me. Those results also came negative. I got a skin lession on my face and I went to get it tested 2 days ago because I'm in denial of cheating and the doctor said it's 1 million percent not herpes laughed at me and refused to test me. She told me that my girlfriend got it in a hard to reach spot orally. My girlfriend said she never had herpes before and I never had herpes. They say herpes have an incubation period 2-12 days for it's first outbreak.
I love my girlfriend to death and I am in slight denial because I have so much faith in her. I'm only questioning if she did because there is hard proof she might have. She told me that she has only been with only two guys with a full on sexual relationship and all that but I am so confused now. Please help me. If I don't have hepes who did she get it from and how.
Did my girlfriend cheat on me she has genital herpes now?
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