The Souvenir

So tomorrow, we'll hit 21 weeks and I'm already experiencing all the joys of pregnancy. Insomnia, check. Achy back, check. Hip pains, double check. Now...add onto that the fact that my 18 month old isn't sleeping for crap (c'mon dude, you were on such a roll!), and you've got one tired mama. On top of that, I'm trying desperately not to put on too much weight because I randomly gained so much right before I found out I was pregnant. I'm not trying to give myself an extra 50 lbs to lose once the baby is here. Now...please, someone explain to me how in the world to keep your weight the same while you're cooking a baby. Even better, how do you keep from gaining weight when you're too exhausted to move? Ha!