Two days ago, I pulled my hair tightly for a pony tail. it lasted for maybe about 7-8hours. As I released my hear I felt a pain in my scalp on the top right side. I thought it was just because I pulled my hair tightly. but until now, it hurts when I touch my scalp or my right temple or my right side of forehead. What could it be? Aside from this I don't feel anything. PLEASE HELP ME. Thanks!