I'm doing much better, this pregnancy, with dealing with the weight gain.
With Thing One, I waited tables until not even 2 weeks before he was born, and I walked a mile to and from work, as well as a mile or two on my days off. It really wouldn't have been possible for me to get more exercise. And my midwife at the time gave me a chart of foods to eat every day--so many servings from one category, so many from another, etc. I distinctly remember crying at the table, trying to make sure I ate all the food I was supposed to, and being so stuffed I couldn't take another bite.
At 30 weeks, I had gained 30 pounds and the midwives were like, "Hm, you might want to slow down there, chow hound." In the end, I gained 40 pounds. By the time the baby was 4 or 5 months old, without dieting or anything, I had lost fifty
pounds, and looked like I was going to just fall over.
I had to go back to trying to stuff myself, in order to not starve.
With Thing Two, I spent the first trimester laid up on the couch, trading a bunch of nasty colds & flus back and forth with Thing One (who was 2 y.o. at the time), I waited out the second trimester for record low temperatures to go away so I could take my toddler out, and I spent the third trimester miserable and wanting a divorce and crying all the time.
I gained 40 pounds again. And it took a little longer that time to lose it all--maybe 2 months. But at least I didn't go over the edge into emaciated, either.
This time, I'm eating good foods in amounts that make me stop feeling hungry, but not so much that I feel stuffed. I'm exercising some, but I stop when I get tired.
At 28 weeks, I've gained 25 pounds. I think it's just the way my body makes babies: I gain what turns out to be around a pound a week. Doesn't matter what I eat or how much exercise I get, I guess.