Hi, I had an episode of seizure (Grand Mal) over a month ago. I was prescribed Dilantin. Since I ake my meds, I feel grogy, I have difficulty walking normal (people ask my why I limp) and if I try to walk normaly, my head seems to spin. My index finger twitch when I work too much on the computer or when I am tired. Is this normal or I was prescribed the wrong medication?