Having Knee Injury On 25 Th Oct . Then Consult

Having knee injury on 25 th oct . then consult with a orthopedic doctor on 26oct he reported huge swelling and needle aspiration required. Then he extract 40 ml blood and put a knee brace for 21 days. But on 10 th day I cut the knee brace and observe a little swelling and pain. I dont want to put on knee brace again. Is it possible? Should I take analgesic ? Pls advise..