Executive assistant symptoms and conditions

I am a female in my mid-to-late 30's. I was on Topamax for about a year. The memory, vocabulary, concentration, focus, loss of words and 'confusion' got so bad it became a real problem at work and the rest of my life. When I started forgetting how to get home, the neuro doctor took me off of it. Those problems decreased a bit, but never entirely disappeared. After weening off the medicine, the full-blown headaches/migraines returned (Topamax only moderately relieved pain). So now in addition to the pain in my head, I have the lingering sides-effects to deal with. It cost me my job. I've been off Topamax for over a year and still have not regained control of my own thought processes. Among other things, it's embarrassing because I feel stupid. I no longer understand about half of what I read, have trouble following (and remembering) conversations, habitually forget what I'm supposed to do/have done/am doing. Forget being able to follow a series of directions. I am afraid Topamax has caused permanent damage to my cognitive brain functions and I have no idea what to do about it. Has anyone else experienced this problem?