Caroline,
I am very sorry about what you have had to go through these past few weeks. However, I think you are are very brave to come through such a horrid experience, but not only that I think you are extremely selfless to write your story in your head while laying in the hospital, just to make sure you warn others of the possible dangers.
Since I have been reading this message board (long before I actually posted). I have came in contact with many women with extrodinary stories of heartbreak, suffering, but also joy. Thank you Caroline for sharing your story, and thank you to all the women who post their personal stories. I have found this board very helpful, and a major support systems while dealing with this terrible thing they call infertility.
I can end this, Caroline, by telling you a bunch of "your clinic should have..." but you know best about that situation. I will end with some information that my RE gave me when I was at risk for OHSS, so maybe this message will get out to other people.
There is a HUGE push to drink water on this board, and drinking water is GOOD, but you must be smart about it. Normal daily intake of water should be 8 8 0z glasses (those of you across the pond will have to do the conversions yourself. I am mathphobic

). My RE suggested that I do not exceed 10-12 8 oz glasses a day and told me, "Drinking too much water could be just as bad"! My RE said the best thing to do is to watch my salt intake, but again he said there was no need to limit salt all together just limitfoods with high salt content like ham and potato chips.
I think many of us get somewhat obsessed when we are going through IVF, and we think the more we do is better. At least drinking tons of water or limiting salt all together makes us "feel" like we are doing something postitve, but we all need to remain smart, and not fall in that horrid IVF trap. I can say this now because I am between cycles, but if anyone remembers my post during my 2WW I was anything but sane and right down obsessive.
I have went on way too long. Caroline, again I am so sorry for your expereince, but thank you so much for sharing. Please take care of yourself and David. We can not give enough credit to all the supportive husbands and partners out their. I could never go through treatment with out my Chris!
Ladies, please take care of yourself during IVF, and if you are vomiting...demand test!!
Mia