Hi,

don't get upset about this - NO WAY this gain can be fat. It's water - some people retain in the beginning of this WOE. Try to avoid too much salt, take extra C-vitamin and drink lots of pure water - this will help. The water gain could also be due to TOM (time of the month) approaching.
But the most important thing is - try to understand how this works by reading as much as you can. My link about the weight roller coaster is exactly about water fluctuations.
I live in Frankfurt am Main. Nice to meet you Visit my journal if you want - you can do this and you are not alone!
Alina