Recently i've noticed an increase in my hunger. it's to the point i'm being woken up from it. i eat a lot and no weight gain or lose. what could it b?

Could be Anxiety: Could be anxiety but also could possibly be hyperthyroidism. If it's at a point this extreme i would see a doctor right away.

Increased appetite: A sudden increase in appetite in your age may just mean increased metabolism or your body's way of compensating for increased activity. If you have started your medications recently, that can cause increased appetite as well. You should get yourself checked by your doctor to make sure you are ok and do not have a thyroid or other abnormality.