To much weight gain pregnant?

ok soo i am 25 weeks pregnant... soo i started my pregnancy very overweight about 230lb and i'm 5'4(yes i know i'm fat) and in the first 3 months i lost 8 lbs soo that took me to 222lbs i now weigh 239lbs meaning i've gained 17 lbs... is that really bad considering i lost 8lbs in the beginning? the baby already weighs like 1/2lb more then its supposed to for where i am and i have extra amnio fluid... i'm really trying to controll my weight gain.. but no matter like how healthy i eat and how much i walk and i'm chasing a toddler around i keep packing on weight... is the amount of weight i've gained horrible...?