If you've been sticking to your chosen plan, it's incredibly unlikely that you've managed to gain any fat.
What you're seeing is water weight, and it could be the result of a lot of things:
- weight lifting/other strenuous exercise
- not drinking enough water
- waste (I peed a pound away this morning! TMI, maybe, but I was happy.
)
- "That Time"
- extra sodium over the past day or two
Plus another half-dozen or so that I'm just not thinking of at the moment. But if you're staying on course with a plan that has worked for you previously, you're doing your part; your body has no choice but to cooperate and shed its excess weight. It's disconcerting and even discouraging sometimes, but you get used to these fluctuations.
Do you weigh daily? Sometimes that helps with getting used to the little pound-here, pound-there flutters on the scale.