It could be the first signs of a lot of things, but I wouldn't worry about cancer just yet. Look at your hydration first of all. It could also be a virus that will pass in a few days. Diabetes is another one that can make one feel tired.
Further blood testing will give your doctor an idea of where to look next.
Kerry
Kerry, RN
Please click the accept button if this has helped you. A bonus is always appreciated as well.