I need help

I had sex with this guy I was dating about two weeks ago, since then he's stopped talking to me and I've also started getting blisters and almost like pimples on my inner left thigh and under my right butt cheek. This morning I found another one but on my vagina. The blisters on my legs are the only ones that hurt, the one on my vagina doesn't hurt but it's red and was pussing when I found it in the shower. 
I've looked up different STD's and couldn't really find anything that matched these symptoms. 
I made a doctors appointment but it's not until next week. I'm going to try and go to Planned Parenthood as soon as possible because a week is too long to wait 
Has anyone ever had something like this? I've never had any type of STD, that I know of. I went to the OBGYN a few months ago and was tested and came back clean. 
I just don't know what to do and I'm scared he gave me something.