In one post, you say you are usually signing an AMA, and in a later one you mention again signing out early. That is absolutely the worst thing you can do, especially if it is on a regular basis. As Paul noted, even if they are not pulling fluid, they are filtering your blood for potassium, Phosporus, and urea.
To be fair, Aaisha.Dar did mention vomiting and fainting. That is a sign of very low blood pressure. Dangerous to continue after that. If it is the same problem I had, there were a few times that the nurses pulled the plug on my dialysis as they felt it was unsafe to continue, due to low BP and a strong risk the blood would clot in the machine.