The "new" pain sounds more like sciatica to me. Sciatica pain usually is in the back/hip/leg and into the foot. But in the early stages, it can be just in the upper leg.

The pain is usually on the outer side of the leg, although I get pain in the shins too. It hurts ALOT behind my knee also.

Sciatica can be caused by a number of things, such as a herniated/bulging disc that's pressing on the nerve, or a fall, tumor, etc. Many times, it can be relieved by physical therapy. Why not ask your doc to send you to PT? It's better than having to take medication all the time!

I hope you start to feel better soon! Take care & God bless. Hugs, Lee