I Am On 2000mg Of Gabapentin. I Experience A Feeling

I am on 2000mg of Gabapentin. I experience a feeling of sweating, expecially in my face and arms, but when I touch them, I don't feel any
persperation. If I wear any fabrics other than 100% cotton, my body feels awful. Does the heat from the furnace in my house contribute to this also? I have to wear all cotton pajamas to bed otherwise my body can't stand the touch of the sheets & I especially feel extremely hot at night and don't even want my husband to touch me.