I second what jklim4642 says. I set alarm and try to drink a bit of water every 45mins then measure pee output. Drink a bit, pee a bit. Drink a bit, pee a bit.
Both my cycles I had ohss. First cycle chemical pregnancy but at least beanie did implant a bit.
Second cycle bfp. But ohss may come back a bit. I rem doc was scanning me at week 6 and said my ovaries swollen again and got fluid in abdomen. but nothing serious. Possibly just a bit more uncomfy and nothing they can do. Not the full suite of ohss symptoms also. I did remember getting bloating back again very early in first trimester, like 4 days before my bt.