I JUST posted a question asking about this same thing! I don't know why, but I'm in the same boat as you, except I don't have the depo shot to blame it on

I got married a year and a half ago, and since then I've gained sooooo much weight. I was always really small, I think on my wedding day I weighed 93 pounds, but I was proportional as I am only 5'3". Now, I see 118 on my scale regularly (which is about how much weight you've gained as well). I feel like this is a lot in a not-so-long amount of time, and I've started to feel bad about it. It's seriously alllll in my stomach area, and I hate to wear jeans now because I feel like it makes me look even worse and they are really uncomfortable now. I've had to buy a bunch of new clothes because all my old ones don't fit anymore (granted I wore the same size clothes throughout high school and my first year of college, but still... its devastating). The last straw was the other day at work when this rude male coworker of mine asked if I was pregnant. Ughhh! The worst part was, I'd JUST found out that I wasn't and to be honest I was a bit bummed about it. Even my mom has begun asking me when the last time I went jogging was and questions like that, and it just makes me mad. She has a small frame herself, and even after having both me and my brother has never had to worry about her weight in her life. She seriously had the nerve to ask me if she could have my old jeans since "they probably didn't fit anymore." Ugh. My dad is also lean, so I have no idea why this is happening. I'm so self conscious about it lately though, I never want my dh to touch my stomach and I'll change my clothes a million times just to TRY and find something more flattering. I just want to be comfortable in my own skin again and feel sexy with a lean and toned body. My dh of course assures me I'm the most beautiful thing ever, but I have a hard time convincing myself he's being completely honest when every other person in my life it seems has noticed my recent weight gain. I KNOW he sees it too, and I just want to look good for him! Right now I could seriously take a picture that would pass as a not-so-cute baby bump
Me on my wedding day:
Me a few months ago. Not the best picture but please notice the huge belly: