Left knee, inside joint bone is very sore and painful, in bed laying on my side, it pains when it touches my right knee, hurts to walk, daily?

Get examined : You need a knee exam by your PCP. Probably an xray and maybe an MRI too.

Be seen: I would probably be seen. It usually represents either an inflammatory condition, such as gout for example; or a structural problem such as a tear in a meniscu or aggravation of underlying arthritis. An exam and X-ray can go a long way to making a diagnosis and it may have a simple solution.

Get evaluated: Knee pain can have multiple causes including but not limited to trauma, infection, inflammation, and neoplasm. A thorough history and physical followed by diagnostic imaging can help get the answers and treatment you might need. Common conditions could be arthritis, meniscal pathology, and soft tissue injuries.