For over a week now I have been extremely thirsty all the time and have been drinking to try and combat this and so urinate more. Yesterday I had stomach cramps which were soon sorted by eating having only toast for breakfast and today having the cramps again, at a later time after having porridge and felt very weak and was shaking whilst making something to eat. I also woke up very tired this morning even though I had over 9 hours sleep and fell asleep at 1pm and waking up at 4pm. However I don't seem to urinate too much at night. My Mum also has an under active Thyroid and I am worried this could be Diabetes but am also worried I am jumping to the wrong conclusion and it is a virus and stress mixed together.