Fluid retention- weight gain

[Deemaxxx]

I have got gained a lot of weight in the last 6-months my GFR is about 15 I'm ready to go on to dialysis I cannot lose weight even though I'm not eating too much I am not overeating and I have cut out the beer drinking so why am I gaining so much weight is
it possible I could have have 5-8k water fluid retention
I also cannot breathe I can't seem to get a breath but doctor said my oxygen levels are good so I'm confused by all this
thanks in advance

[Ashfall]

Aahhh, I have been depressed about my weight for the past year now. I could have gain 10k because of water retention.