 [ Symptoms ] sharp pain under right breast rt side neck pain cough causes instant migrane on rt side normally migranes on lt side [ Disease ] migraines are vascular headaches and not all headaches are migraines migraine does not mean a severe headache it is just one type of over a hundred different kinds of headaches the type of headache you may be describing is one of the more common types a muscle tension headache but the pain under the breast is not a typical symptom muscle tension headache can certainly come from the neck since you cannot be blindly diagnosed over the internet i would suggest that you see your medical provider for a proper examination