Question Ladies

So for the past week I have had an odor from down there. Not when I urinate or wash but during sex it is noticeable. I figured my pH is off because my boyfriend finished in me. After that that's when the smell started. Its slightly fishy which I know is a symptom of BV and there is a noticable amount of discharge. Is there any way to get rid of it or try to get rid of it before trying the doctor? Last time they gave me Flagyl and it made me really sick. Just wondering if you guys knew a solution.