This is normal, no worries!! I was grieving the loss of water myself...but that comes back (for me and my surgery buddy) inside the first two months....about 3-4 weeks. Hang in there!
I had my surgery w/doctor Ortiz in TJ. Great doctor, great experience! It's been 5 months and I'm down 70 lbs...go w/Ortiz/Martinez, they know what they're doing.