i was working out and then suddenly had a throbbing headache in the back of the head for about 30 seconds, after the throbbing sensation went away it continued to hurt and its still hurting in the back of my head. i feel somewhat dizzy but that may just be because of my anxiety, im only 18 so im not sure if that has anything to do with it but im just really anxious right now, im sure its just anxiety that's making me feel dizzy and feeling somewhat out of it but any information that would make me calm down would be helpful