Pustules on inner thigh

I'm a homosexual female.

I woke up this morning with pustules on my inner, upper thigh. They're small, not too clustered together, slightly itchy, and have a very dull pain which I'm not sure came before or after I started touching the area. There are no pustules on my vagina or anywhere other than my upper thigh. I do not wax my thigh.

I've had sex once with a man approximately 4 months ago using protection and he did not ejaculate. He is said to be free of any sexual transmitted diseases, but this is not entirely confirmed.

I've had a total of 4 female sex partners in my lifetime, one of which I'm in a serious relationship with. It's confirmed that she has no sexually transmitted diseases. We perform oral sex; we don't use toys, and she has had no other sexual partners (female or male) in the duration of our relationship.

Two days previously, I had gone to a foam party at a local club, and when I got home, I threw my clothes into a laundry hamper and showered. The next day(yesterday), I pulled jeans from under the wet clothes to wear them that day. The jeans were damp, so I put them in the dryer and wore them the rest of the day.

I had also gone to the restroom which was very wet from everyone going in and out of the foam approximately three times, but I'm sure I didn't let my buttocks touch the toilets, but there is a possibility that it did.

Today = pustules

Foam parties - the entire dance floor is filled with foam and participants dance in the foam, there is also a wash station to remove excess foam after dancing. It gets very wet.

I shower everyday since the foam party.

Since today is Sunday, I went to a local emergency clinic which was in a not so great area. The doctor had popped the pustules and taken a swab. He also prescribed me antibiotics and I had a shot of something with -cillin. He says he doesn't think it is an STD and maybe it's just bacterial, but he went ahead and sent in the swabs.

I would like a second, third, ect. opinion.