On 22 march, due to dry drowning Doctor injected injection(two pain killer ) from my hand  nerve (area below ring finger) . Now sometimes i feel three small lamps in same nerve near wrist of the same hand. Sometimes on touching it pains too little bit. Kindly advise please. No meditation is going on. Also having stiffness in my right knee nervous. I am having tissue fracture in left knee so all body weight is going on right knee.