Imbalance problem. Resolve this problem.

One day I was doing forward and backward head movement and some leg exercise at night. In morning 2 times dizziness occur..2 one is more dizzy.After that imbalance problem starts. When I sit on bed with leg folded.. After 10 minutes I experience imbalanced. It feels like I fell down either in right or in left. But after sleeping some time it goes again scene continues. I consulted Ent doctors. He suggest medicine flutigo plus after ear typanometer test which is calcium channel blocker medicine and suggested some exercises. But things will not workout.. Same sitting problem continues. After that I consulted a neurologist.. He suggested for cervical mri scan.. After mri scan It show diffuse disc bulge is present at c4-5 c5-6 and c6-7. He suggested medicine but it will again not workout in my case. Kindly suggest me what I should do to resolve this problem.