Copper IUD and BV

I thought my copper IUD was causing my BV but I got it removed and I’m still dealing with it. Now I’m thinking it’s tampons. I don’t know, I’m miserable! Any tips? I take supplements, watch my diet, I’ve tried PH balance gel, I don’t douche or use soaps. I’m sexually actively with one partner but we’re long distance so I also go months without intercourse. Help!