Normal smell?

So ive been on birth control for 3 years. I was on it for a year before me and my boyfriend started having sex. When i was in middle school I obviously started my period around that time. And I started noticing a smell, so I started using feminine wash. This whole time up until now I thought it was helping me. I used different washes, throughout the years and even 2 probiotics. One was recommended to me by a doctor. Nothing worked. I started using just water when washing the lady bits and it seems to be working. But when I sweat I have this smell down there. I have normal looking discharge, it’s white and sticky almost all of the time. Sometimes it varies in color and that’s okay as long as it doesn’t have a smell while being on birth control, per what I’ve been told. But the thing I’m worried about is that when my boyfriend goes down on me he says I smell & it isn’t fishy. I’ve heard that you have your own natural smell and you can’t really get rid of it. Is that what I’m experiencing? He says it doesn’t smell bad but that I “need to get it checked out” and that I need to eat pineapples to make it better. What do I need to do? Do I need to talk to a professional or eat pineapples or what? Is there a probiotic that I could take? I shower every day so I don’t know why there’s a smell. Sorry this is long but thank you for reading and possibly helping me.