Could I have an STD?

Natali

I'm going to be honest. I had unprotected sex with a guy I had been seeing for a while now. I'm on the pill and he told me he had only been with his past girlfriend, so I thought it would be okay.

He was not exactly good at sex and we couldn't even finish because he hurt me so much my vagina was swollen shut. It hurt for about two days afterwards and then I started having discharge with the consistency of cottage cheese and a bad smell coming from down there. Literally no other symptoms. I would normally think it was only a yeast infection, but it seemed weird that it came up right after I had sex with him.

I know I should get checked out anyway, but doctors are super expensive where I live (outside the USA) and I don't have insurance. So I just want to be sure I'm not being paranoid.