HELP I think a guy have me an STD

So I am about to be a freshman in collage and during my senior year I gave this guy that I liked a blowjob. We didn't use a condom but at the time I didn't know that you should. So it was my first time and I deep throated most of the time. But after my throat was really sore for more then a week. I thought that it was because it was my first time doing it. But now I wonder if I may have gotten something. I want to get tested but I don't want my parents to know that I have been sexually active.