I'm A Heavy Set Girl And I Shower Daily If

I'm a heavy set girl and I shower daily if not every other day. I clean myself very well down there. But I notice a smell. It's been this way for a couple of years. I haven't been to the obgyn in about 5 years. But it's a musty almost fishy smell. No matter what I do I cannot get rid of the smell. Please help! It's so embarrassing.