If the tear is small and on outer end of meniscus, it will completely heal within 4-6 weeks. Initial treatment of rest, ice, elevation and compression is followed up with physiotherapy. You may need non-steroidal anti-inflammatory medications to relieve pain. If it has been five days, consult a doctor and start physiotherapy. If after 2-3 weeks of physiotherapy, no improvement is seen, then your doctor may take you up for MRI. Take care!
The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you. The advice may not be completely correct for you as the doctor cannot examine you and does not know your complete medical history. Hence this reply to your post should only be considered as a guiding line and you must consult your doctor at the earliest for your medical problem.