I've got to do a urine flow diary for the hospital and am getting a bit freaked out. I have in the past 21 hours (since about 10pm last night) produced 620 ml urine - but have drunk well into 1800 ml - I have spaced it out regularly but I'm hardly peeing at all - I don't really feel the need to go.. it says on the internet that the average adult passes around 1500ml a day with no need to force. This morning I did need - desperately - but it took me well over an hour to go, even with forcing to the point I ended up with abdominal pain and a headache. Since then I've barely needed and can only go when I go for the other end, if that makes sense, one seems to set the other off. I wouldn't mind but I don't feel great, like shaky and giddy and weak almost. It all seems a bit weird.. I can see my GP monday morning hopefully, I'm planning on ringing first thing Monday for an appt.. But if I'm not weeing then where's all this water going, I'm starting to seriously worry about water intoxication!