My back bone feels like its going to fall out when I stand up from bed?

What is a computer time bomb virus? Why are you vomiting blood? The impulse that triggers a contraction travels deep into a muscle fiber by means of what? Why can nephron not regenerated? How does the skin help block pathogens? How long is it normal to bleed for when 7 weeks pregnant? Do biceps or triceps act antagonistically while doing a push-up? What is normal blood pressure for a 3 month old? Is it bad for your collar bones to stick out? What STD is caused by neisseria gonorrhea? Where is the town of Dura located? Chain forming bacteria that causes the severe pharyngitis known as a strep throat? What is the security measures have been taken to protect the smallpox virus? What things cause cancer? What is a ladybugs respiratory system? You have two patches on both sides of your head the size of a baseball the spot is not bald but your hair has fallen out and is a thicker texture only in the two spots the spots have a itchy sore feel? What are the abb muscles called? Does bathing in bleach water cause bv? What is anerexia? What organ does cancer affect?