I feel so terrible about myself.. I used to be at the gym all the time working out and since I've…

I feel so terrible about myself.. I used to be at the gym all the time working out and since I've been in the third trimester I can barely get out of bed or go for a walk. I'm in so much pain. My arms are getting flabby and my legs too. I have never weighed so much in my life. I feel so ugly and I hate it.