Last night I woke up during the night with severe pain in my entire right arm. It went from my shoulder all the way down to my hand. It was so painful I could not go back to sleep. I did have some pain in the left arm too but it was nothing like the right arm. It still hurts now and I've been taking Tylenol and Advil all day. It is normal to have severe pain in only one limb like that? This is definitely the worst pain I have ever had since I have been diagnosed with Fibro.