Hypothyroid. To sit back and take rest.

I am a hypothyroid patient , i have gained around twenty five kgs weight in a year . Right now I am talking 75mg of eltroxin , my height is around 5'3" . I am suffering with depression and always have bad thoughts about my self . I have started looking fat and shabby . I am a married woman , my daily schedule is not according to what it should be. I get up late in morning and at once enter to the kitchen to cook for my husband after he leaves I again go off to bed and sleep for 3 hours more . Then I get up at twelve and start doing all house works . This made me skip my morning walk and exercise and breakfast which I know must not happen . And at night my husband comes late by 10 pm so when he comes then i eat dinner with him and sleep by one or two am at night .All this things have really hampered my life badly I really dont know what to do.When I feel I should walk my body feels stressed out feels like something is compelling me to sit back and take rest .