Yesterday while at work I started feeling pain on the left side of head that went down the left side of my face and neck to the top of my shoulder. Today while getting ready for my day it hurt to brush my hair and put makeup on the left side of face and head. Its a dull pain feels like a headache but doesn't at same time. Not sure if I should go into see Dr. or if its just a simple headache. Any suggestions would be appreciated thanks in advance.