(((((Court))))) honey,
google a whole lot of definitions of "karma"

you are describing a completely different phenomenon, one that should be amenable to medical treatment but it sounds like they haven't worked out the cause of your problem, which is very likely to be stress.
cry your eyes out, sometimes it makes the headaches go away.
try to learn some relaxation exercises, go to meditation classes if this is possible.
have the headaches been dxed as migraine ?