What does it mean when the back of your head itches and aches?

Could you be pregnant if you got your last period on July 1st and it is now August 2nd and still no period but a pregnancy test was negative? Is rheumatic heart disease genetic? What keep trachea covered during swalloing? Can you get herpes from urine? Can demention cuz angry problems? Is there reasons other than pregnancy that can cause you to miss your period? How soon after a d and c can you conceive? What is a fear of syringes and needless called? Could you have a bone spur on collar bone near clavicle at base of neck? What provides support and levers on which the muscular systems can act? Do the cold ones truly exist? What are the signs of someone having bug eyes? How do you get rid of snakeheads? How long does it take iodine 131 to decay? Can you be allergic to Red peppers but not green? What does it mean when you feel slight numbness in your left ear don't hear that great out of it anymore and cant take phone calls with that ear anymore because it makes your left eye jerk impulsively? Nerve supply to the kidneys comes from what? How did the baby form in the test tube? How does bleeding affect colour of feces? What drains the upper extremities deep vein?