Pregnant losing weight?

I’m 24 weeks pregnant and I don’t even drink a bottle of water a day.. I’m

Holding a lot of

Weight ALL over my body really bad. Could it be from not drinking enough water and flushing my body out? Do you think if I started drinking a lot water and walking that it would help lose some of this extra weight? I’ve gained almost 30 pounds and not even in my third trimester I’m 5’2 and almost 180... help