Anyone gained weight yet??

Rita
Apparently I gained 1 1/2lbs and I'm 14 weeks. I'm constipated and if I don't eat, I get so sick. I've been sticking to carrot sticks and apples for snacks. Have been avoiding sugar. I watch the amount I eat. I'm either a little under 1300 calories or a litter over sometimes. I go for walks in the park often. I'm nervous about gaining too much weight during my pregnancy. Getting lectured by my doctor about weight gain made me paranoid. Any advice to help keep a good diet with no stress