Pregnancy weight.

I know no one likes talking about their weight but I'm really concerned with mine & would like opinions. I'm pregnant with my second child (a girl) my first is 4&1/2 (a boy) with my son I was gaining a lot of weight I think by the end I gained nearly 80 pounds! But I was a teenager. I wasn't aware of my body nor did I know anything about pregnancy..my son came out at 10.5 pounds! It nearly killed me & him. I quit breathing & he got stuck at the shoulders causing him to come out not breathing. This one I feel like I've done really good. My son & I go on a walk every day (even in the rain!) I've limited fast food & sweets. I just weighed myself last night & in 4 weeks I've gained 17 pounds! My dr told me I should gain 1 pound a week. I go to the dr tomorrow to do my glucose test. Ive gained a total of about 47 pounds & im 27 weeks.. Any advice or opinions (without being mean) thank you all.