My husband and I joined a low carb diet in Dec. and he has lost 60 lbs and I have failed agin as always.?

I want to lose weight so bad. I stuck to this diet strictly and lost about 14 lbs and found out I was pregnant. I went off the diet and gained back all the weight then I miscarried. My husband has not dieted now for 1 month and is still losing about 1 lb a week. I now weigh as much as him and I hate myself and feel resentment towards him. I dont want to feel this way I love him so much he is my world. I am now thinking I will do anything to lose weight even surgery. I am 5'4" and weigh 215 he is 6'4" and 215. Any advice anyone?