I'm 20 weeks pregnant and as usual have gained an awful lot of weight in the 1st trimester. I'm normally slim-ish and healthy and do lots of exercise but find I am very tired through the whole of pregnancy and don't exercise much plus snack a lot on rubbish. Really keen not to gain loads more but not to be really hungry and tired. Please don't say don't worry about it, I'm pregnant. It's my third baby and one of my children is disabled so I need to stay healthy and as active as possible to make life easier, and life can be a drudge as it is without having 3 stone to lose at the other side. I know this sounds shallow, probably because it is, but would love any tips on healthy, non fat pregnancy!! Thanks.