I never had any side effects when I was taking Topomax, but there are many people on here who have had the same ones you are experiencing. Just make sure that you let your doctor know about the side effects. If the Topomax does help, you can always try to wait out the side effects and see if they go away after time. You can also chose whether you'd rather deal with the side effects or with the migraines; it's your choice. If you do get off from the Topomax, there is always the chance that there is something else out there that will help you. I hope your new neurologist can help you.
Dx: Chronic Daily Migraines & Chronic Depression
PRN meds: Tylonal #3 and Tramadol