Suggest amount of weight gain...thoughts?

oxymoron1

Everything I've been reading has said that typical weight gain for a first pregnancy is 25-35lbs. While at the dr. yesterday I asked her about it and she told me that I shouldn't gain more than 15-20lbs. I'm not overweight at all and I'm a very active person/heatlhy eater. I'm paranoid now because 15-20lbs doesn't seem like that much. Basically I now have thoughts of having to eat spinach for the next 9 months. With no dressing.

Anyways, has anyone else been told to gain a smaller amount? I'm slightly obsessing about this. And by slightly I mean completely.