My partner got tested for stds and came out negative so we have sex and it was very painful. The same night I went home I had yellow discharge so I thought it was a Yeats infection and I put on the cream and I got these bumps on my vigina lips and clitoris& some on my bum I think at first they didn't hurt and now there painful to sit and walk I went to the doctor an pee and he told me it's a bacteria infection and gave me pills. But I still have the bumps and I'm scared I could have herpes. I'm 14 and he was my only sex partner ever is it possible I can get a STD test by myself ?