Welcome! I've had a similar experience with Topamax and it was because I increased it too quickly. My neurologist also suggested I increase it 25 mg / week. I backed down until I had very little side effects, I had made it up to 200 mg / day. I reduced back to 75 mg and it took a good 3 weeks for symptoms to stop. I have now increased by 1/2 tablet and experienced a few more side effects but nothing significant and my headaches have lessened.
I had eye pain and my weight kept dropping. Eventually everything stops or at least lessens to a bearable level.
The secret of health for both mind and body is not to mourn for the past, not to worry about the future, or not to anticipate troubles, but to live in the present moment wisely and earnestly. Buddha