Kindly do not take any medication unnecessarily. Take balanced diet rich in minerals and antioxidants. Build up your stamina slowly and gradually.

ILooks like what you say is right. It depends on the magnitude and extent of the ligament tear. You need at least 3 to 6 weeks of rest using a proper medial restraint brace rather than knee cap. However if your brace is  working that is fine. . probably you are on road to recovery. If the pain is the same.after 6 weeks get an MRI scan and meet orthopaedician. Meeting a physiotherapist is very important in your case to get a proper advice about future athletic activities.

Need clinical evaluation

Require clinical evaluation for that, consult Orthopedic Surgeon

1. Wear proper footwear while running 2. Don't run on hard surfaces like road or pavement.  Run on a mud or rubber track 3. Proper stretching and warm up of the body prior to running 4. Maintain proper hydration Follow these precautions.  If your pain still doesn't go away consult regarding medicine