Good morning, catmom, Wow! You've been through an ordeal and a half! Who knew that simply drinking too much water could affect one's health to that degree?! I have seen football players writhing on the ground during a game due to dehydration. And I just read that those same athletes must not drink too much water to recover or they can be in the state you were in. I never thought it could lead to someone being hospitalized.
Can you tell me how much you drank in a day? I am asking because I suffer from recurrent bladder infections (31 rounds of antibiotics in 2 years 3 months..which is my medical crisis) and I try to drink as much as possible. I drink 6 or 7 glasses of water per day and I feel like I spend a lot of time drinking. I guess feeling symptoms as much as you did would be an indication.
Now that that has passed, try to put it all behind you and move on as soon as possible. A wise Russian woman told me a few years ago that in her country when someone is suffering from distress, he or she should walk in nature near running water. Listen to your favourite music, visit your baby grandson, pat your cats, go out for dinner with a friend, sing, dance etc..