Could Sudden Dizziness Be Due To Thyroid And Cholesterol Medications?

Hi I am a 57,year woman suffering from wicked coldness of my he ad and ears have had hysterectomy and partial thyroidectomy 4 years ago have has him onto underactive thyroid was on lyrica no good now on cymbalta not great have had ent heart mai and brain scan nothing showing can you help I can get sudden dizziness also on Vertigo tablet stomach tablet thyroid tablet cholesterol tablet and mobile for my knees have you any idea