As you have both ACL and PCL injury, recovery will take time - depending on many factors will take nearly 2-3 months to heal with Limitations of movements. Pain can be settled earlier. Please consider physiotherapy for Strengthening of compensatory muscles around knee.

This treatment is being on bases of the information provided.  However I would like to examine & investigate you  in detail. -Control  Hypertension, Diabetes or  metabolic disorder, if there is any.  -Any way it may be tried, --. Dolokind Plus (Mankind) [Aceclofenac100 mg +Paracetamol 350 mg] 1 tab. OD & SOS. X 5 days. --. Caldikind plus  (Mankind) 1 tab OD x 10 days. -(You may need help of your local doctor to get these medicines.) --. Fomentation with warm water. Let the part not be exposed to cold. --. Sleep on a hard bed with soft bedding. --. Keep a pillow under the knee. --. Avoid painful acts & activities. -- .Do mild exercises for the lower limbs. --.(Take help of physiotherapist or you can visit my you tube channel Dr NC Gupta.)   & see  me and my yoga; & yoga simplified. Kindly subscribe to the channel to get notifications for further new information of your interest.  --Do not ignore, let it not become beginning of a major problem. --Do ask for a detailed treatment plan. Kindly make sure, there is no allergy to any of these medicines. --For emergency treatment visit nearest hospital. --Wish you a quick recovery & good health. --I hope, I have solved your problem to your satisfaction.   Dr N C Gupta MS (ortho) DMC 3624  

It will take more time, Rest Ice compression Use knee brace

Stop walk Complete rest

ACL and PCL sprain takes some time to fully recover. Rest Ice fomentation for 20 mins twice daily Use a HINGED KNEE brace while walking, standing and climbing stairs. Avoid climbing stairs, running, jogging, jumping and sports for at least 3 weeks. Start physiotherapy once pain subsides.

Rest is what you neeed. Controlled exercises once the pain subsides. Knee brace. Give it 6 weeks at least