Weight gain

How are you ladies doing?  Have your doctors told you how much weight you should gain?  Mine haven't said anything!  I'm "overweight" to begin with (not a ton, I'm a size 10), so I am hoping to not gain a ton.  So far I'm up 2.5lbs at week 16.  I'm hoping to want healthier food soon - peanut butter and ice cream is not going to help me keep my weight gain in check! Haha