I gained about 60 with my second (my first 2 are 14 months apart) & by OB said flat out "whatever you're eating, stop. You're gaining too much". I was appalled when I was weighed for delivery. The extra weight came off really fast, though, & I was back to normal by the end of my maternity leave. My other 3, I only gained 20-30, & most of that in the last trimester.