This treatment is being suggested 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 affected part.- back & lower limbs. --.(Take help of physiotherapist or you can visit my you tube channel Dr NC Gupta 'Yoga Simplified' &  'me and my yoga'  IT IS FREE. --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

Use ROM knee brace while walking for few weeks if symptoms resolve can resume normal activities if symptoms persist then it will require further evaluation for instability.

Consult me search browse on goggle practo website Dr Rajinder sharma senior Orthopaedic neurospine joint Replace surgeon ,42 years expertise Govt retd Hod/Director Sarhind Orthopaedic Multispeciality medical centre Chandigarh

Knee 'buckling' is a sign of ligamentous instability You would require a thorough clinical examination and subsequent imaging (MRI). Avoid rigorous physical activities until we've come to a diagnosis.

Its stress meniscal injury.. Stop walking for few days