Hi, For the last few weeks I ve noticed I always need to urinate a lot when I ve been to the pub. I generally only have 2 or 3 halves of diet coke over a 3 - 4 hour period, but when I get home I sometimes need to go 2 or 3 times within an hour, and then another 2 or 3 times during the night. I also feel tired a lot in the mornings especially, and in the last 2 weeks have lost my appetite almost entirely and feel nauseous quite a lot. Any ideas?