fluctuating water weight 3 weeks pp?

Compared to first 2 c-sections, in which I lost my water weight in the first week post-partum, I seem to have water weight fluctuate 3 weeks postpartum of 3rd c section. Of course it's far less than while pregnant, but not as much of a disappearing act+it goes up a bit and then goes down a bit. Anyone else? I venture that this is due to hormones rollercoasting still?