I had my bypass on Saturday and in hospital I felt absolutely fine but since coming home on Monday I just seem to feel more and more lethargic and frequently get clammy and shaky with a rapid heart rate. I'm conscious of the fact that in hospital I had 3 liters of fluid IV so I'm trying really hard to drink properly, yesterday I had over the day 1 x slimfast, 1x Atkins shake, 250 mls of tea, 750 mls water and 500 mls of NAS squash and I also managed a couple of spoonfuls of yoghurt and soup. I don't have any real pain from the op just this utter feeling of rubbishness, is this normal and does it look like I'm getting enough in and will this feeling go away???