Help😩😩

So I thought I had bv because I smelt like fish. However I tested and it said I didn’t, so now I’m confused. The inside of my vagina and discharge smells normal but it’s the outside ( my vulva) that’s got this weird fishy smell. It’s nothing OFFENSIVE but it’s there and it wasn’t there before my period started this month. I’ve tried taking probiotics for a few days but that hasn’t helped at all, I have been drinking probiotics drinks everyday and only washed with water ( and Apple Cider Vinegar once) but that also didn’t help. Can anyone suggest what this could be? I’m thinking of going to the doctor on Thursday if this doesn’t stop but I’m just trying to do anything natural if possible before I chuck some antibiotics in my body for the 100th time this year 😩