Is there water on the floor around the base of your toilet? If so, that's not a good sign. This means there's a leak in your toilet — most likely.
If your toilet is leaking, it might be due to an old wax gasket. then tighten one end onto the fill-valve shank protruding from the bottom of the toilet tank (step 7).
This article on 'Toilet Leaking at Base' will help you to idendity the cause of your leak and direct you to the resource that will help you fix it.
Is water pooling on the bathroom floor around the toilet? Don't ignore this problem! If the toilet is leaking from the base, this water has come.