smell keeps coming back

so i’m pretty sure it’s BV once again I keep getting this and i’m not sure why!! i’ve only had 2 sex partners the past months and I cut it down to only one but I used condoms with both of them.. so it’s something else that keeps throwing me off and i’m not sure what it is!! I purchased boric acid suppositories and they have helped tremendously BUT after a day the smell comes back.. am I suppose to use it daily until I notice it’s all the way gone? antibiotics are not helping it always comes back I need something that’ll help long term wise..