I got a vitamin B6/12 shot combo on my hip. Now the side of my leg near hip running down leg is numb. Is this ok? I've had many B12/6 that were ok.

Should heal soon. Most likely the shot caused trauma to a nerve. This is unfortunate but it should fully heal within a short time. You might try the homeopathic remedies Arnica (for trauma) and Hypericum (for nerve injuries). if it it not better within a few days acupuncture and micro-current therapy can help too. Generally if injections are given in the upper outer quadrant of the buttocks such injuries are rare.