I think 10-15 Lbs weight gain is extremely unreasonable, despite your starting weight. I am more like... 25 Lbs over weight (considered obese on the charts but i don't feel it or think I look it and find it kind of insulting that I am labeled as such when i am not *that* big, IMO...ANYWAYS lol) and my OB in my first pregnancy (and I was BIGGER then) told me no more than 25Lbs! My widwives in my last pregnancy didnt stress one bit or give me a guideline and neither has my Mw this pregnancy. Though we are responsible to make good, healthy choices- our bodies know how much weight we need (or dont need) to maintain a healthy pregnancy. I have friends who are absolute health nuts and keep physically fit all pregnancy who gain 60Lbs per pregnancy! and then I know obese mama's (who may or may not make all good choices during pregnancy, depends on which mom Im refering to) who barely put on weight at all. why? bc your body knows what it needs to sustain a healthy pregnancy! Yuor placenta with fluid weighs, on average about 12 Lbs on it's own. Plus then the weight of baby (say anywhere from 6-10 Lbs, average). Thast right there mean baby +placenta weigh 18-22 Lbs on their own by the end of pregnanyc if mom doesnt gain any weight of her own or build up any water weight. So to ask a mom to only gain 10-15 Lbs is asking you to LOSE body weight while pregnant!! unreasonable.
I agree with everyone else.
I too completely agree with everyone on here...your body will gain or lose the weight it needs to in order to have a healthy baby.