Been taking topamax two weeks now. Dr. strted me on 25mg then aft...

Been taking topamax two weeks now. Dr. strted me on 25mg then after month I will go up to 50mg. He belives in the lowest dosage while getting benefits. Headaches have gone down. Only had twoand that was on days i worked 16 hours and was majorly stressed. one side effect I seemto be having and am questioning if it is the med or I am losing my mind is that I am getting dizzy alot, almost feel upside down or high.It seems to only happen if I am sitting for long or have my head laying horizontal. It is weird balance gets thrown off alot