I've had that happen at work several times. I'm a nurse and wear scrubs which usually hide a lot, but apparently not. I just say no, I'm just fat. Why should I be embarrassed? The person asking the stupid question or making assumptions should be. Also, the area of nursing I work is labor and delivery. Think about mamas who's babies didn't make it and still look pregnant. Be sensitive and just don't ask. Could you imagine just delivering a fetal demise and then someone asking when you're due or congratulating you? Keep it to yourselves people!!!