I agree your doctor,It is soft tissue damage,but, unfortunately, it will not heal within a week ,as this damage located in fat pad behinding kneecap,which is hard to heal quickly,so see orthopaedic doctor,mention " chondromalacia patella",then...
I forgot to mention that I have a good few months of physo (stretching and strange exercises), this was unsucessfull.
I am being sent back to a Physo for a few more months then if that doesnt work hopefully to a Orthopedic Surgeon.
Thank you for you post.
The pooping knee may be due to the tear in the meniscus, typically the discoid meniscus.
Conservative treatment consisting of exercises and stretching can be performed.You should see an orthopedic suegeon and get an x-ray done to know the pathology.