How much weight should i gain during pregnancy?

Average is 25-35 lbs: But if you gain less and your baby is growing normally that is fine, i never worry about low weight gain in my pts., as long as the baby is growing normally. Many pts have trouble with too much wt gain. And at your age do not go past your due date, new studies show ideal time to deliver is 39-40 weeks. Too many things can happen that could have been avoided when u go past your due date!