Back in April I had unprotected oral sex and unprotected sex, only for a second, before putting on a condom. After that I only had sex with my girlfriend who I began dating after the previously mentioned sexual encounter. She claims to be clean as of January when she says she was tested.
On June 22nd, a rash began on my scrotum. It started as a burning sensation that grew over a few days. Over those days, I was outdoors in the heat, participating in a sporting event. After about 3 days, the rash had grown into what appeared to look like herpes. It was red with puss being excreted from the rash. I did have one pimple-like sore show up on the shaft of my penis. I never experienced flu symptoms that I've learned are associated with Herpes. I also have never had anything related to Herpes show up previously. During the time of my rash, my girlfriend experienced some pain around the opening of her vagina during sex and said that two red areas appeared around the opening of her vagina.
One week since the rash began, I saw a doctor and he said it was a fungal infection and prescribed Nystatin cream and did a blood test for Herpes. After one week I returned and the cream had almost made the rash disappear. My blood test was negative for Herpes.
One week later, the rash returned, although not as severe. I saw another doctor at the same practice. He prescribed a slightly different cream—Nystatin Triamcinolone—and since I was concerned that it might be Herpes he prescribed a version of Valtrex to take three times a day. I used the cream and took the medicine. It cleared up in roughly five days and hasn't returned since.
Since I was concerned that it could be Herpes, I am returning for a second blood test in a week and a half from now.
1) If it is Herpes, would Nystatin cream have made it clear up like it did?
2) If it is Herpes 1, would I have experienced flu-like symptoms?
3) Since I didn't get an initial culture during my first visit, are the blood tests conclusive?