got lost the last few days

sorry about not posting recently...it's been hectic. I am so looking forward to thanksgiving! So, TOM hit me yesterday *darn the scale too* and I splurged for the fam and went and got blizzards from DQ....they have a pumpkin pie one that is SO good! but....i am staying OP until Thursday! What I really want to know is why we gain weight during TOM? I got on the scale today and it was almost FOUR pounds....and trust me...i did NOT eat four pounds worth of food this week!! any answers to that one??