I have been on Topamax for 2 months and it has been horrible. I s...

I have been on Topamax for 2 months and it has been horrible. I started at 25mg at bedtime and worked up to 50mg at night and 25 in the morning. I wish I never took it at all. I have had numerous migraines with the medication except now my tongue goes numb every time. I can't remember anything and I am in a fog all the time. I had to take a trip to the emergency room for tachycardia that occurs every time I stand. It goes up from normal to 166bpm. The cardiologist insists the Topamax is causing orhtostatic hypotension. I stopped all of the Topamax on Monday and it is now Saturday and I still feel horrible. Migraines are horrible but being stuck on your couch all the time because your hr increases sharply and you feel like you are going to pass out is worse. My hands and feet tingle all the time. I feel out of breath and I have always been very active. I now feel anxious all the time (never like this before). I feel like I am not myself and I am going crazy. I do not trust myself because I do not feel like myself. Has anyone else had these symptoms? Do they eventually go away? The cardiologist can't guarantee that they will ever go away.