Because I do.
I am normally I size 12 and have no trouble maintaining that weight. Then I get pregnant and it all goes haywire. With DD I gained a stone in my first trimester and 5.5 tone overall . Probably as a result I got high BP and pre-eclampsia.
This time I am only 5 weeks pregnant and am determined not to bulge like last time. At 5 weeks I have no reason to start gaining weight, but I have. I am already three pounds heavier then normal despite the fact that I know I am eating well and swimming three times a week.
Am I the only one whose body reacts to pregnancy as it is was a threatened famine and just stores ALL the fat it can?