Suggest Remedy For Foul Smell And Abnormal Discharge From Vagina

Hello! I have a question:) I am an 18 yr old female who is still a virgin(to rule out the possibility of an std.) Lately, I have been noticing very strong vaginal odors. sometimes it smells like ammonia, and almost always musty(sort of like an armpit) but most recently the smell is more or so fishy. My discharge is sometimes yellow, sometimes white, and sometimes clear and gooey. HELP!! is this bacterial vaginosis?