hello, about an hour ago i was getting these random headaches which seem to come in clusters, but not always they last from 1 to 2 seconds and sometimes less, they are on my right side of my head.it feels like when you fall on you're head, like a fast throbbing pulse, its not especially painful, just really bothers me.

i also have been experiencing a small sharp pain on the front of my arm which are also random

now its been about 2 hours and the severity and time of the headaches have lessened(lasting only about a sec or less, and less frequent) same as with my right arm.

does anyone know what is causing this?
do you think lack of sleep a contributer?i did not get much sleep in the past three days and i was staring at a computer screen alot in that period, maybe 3 or 4 hours a day