All about the bloat????

So I try not to eat a lot of salty foods and I love water, I've been losing weight but can only notice it in the morning. For the first couple of hours my stomach looks flatter but as the day progresses, I look like I'm 9 months pregnant all over again, and I don't want that :noway:

A little history, I have 3 kids but have been pregnant 7 times, I have issues staying pregnant. My doctor would make me wait until I was 5 months to let people know but I always started to show, instantly. With my last pregnancy I told him that was going to be impossible, and I asked him why it was like that and he told me it was just because that's the way my stomach muscles are after being so pregnant. Now, that may have nothing to do with what I'm asking for help with but, I want to cover all my bases.

Any suggestions or clues as to why this could be happening to me?