Could Gabapentin Intake Be Causing Freezing Sensation In My Toes And Fingers?

hi, my doctior currently has me on gabapentine for my fibromyalgia, he cut me from 2-600 mg tabs 3 times a day to 1-800 mg 4 times a day. I started having the overwhelming feeling in my left toes like it s freezing it has now started in my left hand the ring and pinky fingers. My last 2 prescritions he cut me back one 800 mg a day. This feeling is all most unbearable is there another alternative medcation that will help me