I feel like a yo-yo

I have been sooooo good and my weight does not want to recognise this. This is the week of the month I retain water, so I've got to look at this logically. I should start seeing my actual results in about a week and a half again, but its good to see how much my body can fluctuate. Logically, I can't be gaining true weight as I'm not eating enough calories to gain, I am eating enough to lose.