Core decompression

Patient: Hi Doc,I have diagnosed with AVN stage 2 in left and early 4 in right leg.I have gone through core decompression with bone grafting , and doc suggest 3 month bed rest.Surgery have completed 1 month, and now i have pain some time in movement and pain in left kneecan you please suggest what do in future and about healing process

Symptoms: have pain at joint some time when movement and pain in left knee regulerly.