I seem to have expanded a lot this week, and today I can't do up my jeans. I'm only 17 weeks and had been expecting to be able to get away with normal clothes until about 20 weeks. Is this normal or am I just getting flabby?! I know I need to gain weight obviously, but I have a tendency to gain easily (previously 3 stone overweight) - worried as I don't want to risk gestational diabetes.