Yeast infection

I'm only 16 and I'm pretty sure I have a yeast infection. What can I use to treat it or do I need to be seen by a doctor? I'm not really sure how to tell my mom cause it would just be awkward to bring up. Also I know she is gunna think I got it from having sex which I know I didnt. I'm not really sure how I got it because I shower everyday so I keep clean down there. But how can I go about treating it?