is anyone else having trouble dropping the baby weight

My baby is 5 months and I'm having trouble dropping the baby weight. I'm breastfeeding and I feel like I'm always hungry and I'm always tired. I don't understand how some women snap right back without surgical help. I do spin class almost everyday I try to eat right but when I tried to eat better I notice a drastic drop in my milk supply. 
I used to be a size 4-6 now I'm a 12!!! And seeing those recent photos of Beyoncé after have TWINS just sent me into a frenzy. Although I heard she did get a tummy tuck but still I she looks great. 
Am I the only one? Does anyone have any tips I hate how wide I look I feel like I'm shaped like a fucking refrigerator now. 

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