Super Weird Discharge?!?

Hi! I'm 15 years old and for the past few weeks I've been having the most horrible discharge. It's very liquids and smells disgusting. Im very embarrassed by it and feel like others can notice it. I'm not sure what could've caused it, I'm not sexually active and am very hygienic. Any ideas on what the problem could be and how to help it?!? Thank you so much