Hi there,
I just wanted to say I had the same thing happen to me. I gained weight. It's due to the fluids they put in you, medications, etc. Don't worry, it does all drop off. I'm now almost 5 months out and down 78#. I teased the doctor though saying, see I told you, "my body just gains weight no matter what". So hang in there. I too was in the hospital for 6 days, but it's all very worth it.