It's so frustrating to feel this way. For me even putting one foot in front of the other was a challenge and especially while we were trying to find the right meds to help. I would definitely talk to doc, if the risk of the side-effect outweighs the benefit to you that you don't want to even take it, it's not worth it. However, it isn't always definite you incur that side-effect but there is that risk; you can always stop it if so. There is something out there that is the right one for you but keeping in touch with the doc over your concerns is vital. If it was me, I would call them back to let them know my concern. They might choose something else or increase what already on. Hang in there and know I'm sending good wishes your way.