"After inserting it deep into the muscle, pull back on the stopper for a few seconds to make sure it does not fill up with blood which would indicate that the needle had been injected into a blood vessel. "
Ok my question is, what are the chances of hitting a vein or blood vessel in your ass? I knwo if done properly you wont hit anything, but it kinda freaks me out that there is still a chance that I might inject into a vein....is there a high chance of this when injecting into the glute?