I think i might have HSV-2 or a yest infection, how do i know which one?

I got eaten out by this guy about two weeks ago. He had a beer and chewed tobacco beforehand. Also i don't know how clean his hands were. I also don't know his ual past. Also, about a week ago, i put in a tampon whose package opened up a bit in my bag. Those would be the two reasons why i think i might have HSV or a yeast infection. Is there a way to tell the difference? I am freaking out. And so uncomfortable...help?