I cannot lose or gain weight! help please.?

I weigh about 250LBS and I tried fasting to lose weight and I lost like 30LBS in the first week but after that I started slowly gaining weight no matter what. I tried to up the intensity but it did not help. I am back at 250Lbs now and I used to eat TONS of junk food and I can't gain a pound. I've been... show more I weigh about 250LBS and I tried fasting to lose weight and I lost like 30LBS in the first week but after that I started slowly gaining weight no matter what. I tried to up the intensity but it did not help. I am back at 250Lbs now and I used to eat TONS of junk food and I can't gain a pound. I've been working out and I've gained a lot of muscle, and I'm really toned but I'm still 250LBS.. why cant i, and how the "f" do I lose weight???
Update: By the way I haven't eaten anything in the Last two weeks
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