My mom has the exact same problem you do. She is just slightly overweight herself, but her apple shape, the way she stands, and the shirts she tends to wear have led many people to the conclusion she is pregnant. She has been asked this several times, from rude kids in church to random ladies in clothing stores. It really upsets her. Her temper is fiery so she usually retorts with a snarky comment of some sort, but there's no denying she gets her feelings hurt every time it happens!
I honestly think asking someone if they're pregnant is a dangerous thing, unless they are obviously about to pop! Even then it can tricky. I'm an open person and I don't mind chatting to a stranger, but when it comes to things like that it's best to keep your nose out of it!
I'm sorry people were rude to you. Don't let that distract you from how amazing you are and will continue to be.
