Is it normal to gain so much weight...

I had a eating disorder before getting pregnant I would starve myself sometime I weighed 160 wich is the lightest I've been ever and we'll I'm due in 4 more weeks and am at my heaviest I've never weighed this much I'm up to 212 I don't eat a lot just the regular 3 times a day and snacks lots of water I don't exercise since I got pregant I was scared cause previously I would exercise and kept exercising for my last pregnancy wich ended in and MC so I'm paranoid I inly take walks in the afternoon I'm just a bit conserved about my weight I don't feel quite pretty anymore any advice