I am wondering if its likely that I have an STI. Basically, I had unprotected sex on Thursday, but he didn't ejaculate inside of me (I know I know, I can still get pregnant and can still get STIs - thats not what I am questioning), however, 2 days later (so basically, on Saturday) I noticed I had white, thick, creamy vaginal discharge. But I don't have it anymore, its quite normal again. However, I've had a burning vagina today - nothing when I pee that I've noticed, but its just burning for no reason. Is it likely that I have an STI? How soon would symptoms start to appear? I don't want to face the ambarrassment of going to a GUM clinic, what do I do?!