I have unexplained weight gain.

Karma

I literally eat one meal a day. If I chose to snack it will be oranges, apples, popcorn, or noodles but that's on a rainy day. I'm picking up so much weight everyone around me think I'm pregnant and don't believe me when I say I'm not. It's getting annoying when I go around family who's not use to seeing me look like pillsbury doughboy. Even my fiance seeing it and is confused because he eat just as little as I do. We literally eat the same thing on a regular. Hell some days I'll pick one slice of pizza to eat like today. My stomach is growing and all pregnancy test are negative. I even started my period but this is Beyond bloating on those days. I need answers please someone tell me there experience with high and low estrogen levels and unbalanced hormones.