i get headaches very easily. sometimes its sleep break that causes, sometimes its the motion sickness...and so may other reasons...once it starts, its takes a long time to go away.. min a day or two...sometimes it causes nausea, a bit of sickness and drowsines... at other times its just throbbing at temples and flows to and from back of the head...they feel like cluster headaches...sometimes they dont happen at all and once they start, they come at frequent intervals...can u tell what i should do?