No you're not.
The human ear can feel acceleration, not speed. As long as the aircraft has a downwards acceleration you will feel like you're "sinking". As soon as the forces are equal to 0 (ie the speed of descent is constant) you will not feel anything. Your eyes might tell you that you are descending if you have the required visual references, but your ear can't, so if you're in cloud or can't see out, you wouldn't know once the speed of descent is steady.