What Causes Extreme Leg Pain And Burning Feeling In Outer Right Leg?

Hello, I am a 57 year old female with extreme leg pain aching and deep burning going mostly down my outer right leg from the knee down but also not as bad from the inside of my thigh and down to my foot. no tingling or numbness at this time ( though that has occurred in the past). Not diabetic. I had DVT on my left leg in May (still some clot there as of early July). Just had an ultrasound and CT scan with dye no clots found in right leg. I have had epidurals and other procedures for back issues that doc thought could be causing leg pain. I also have fibromyalgia that under medication (nortriptyline and topiramate) seems to be under control. I have had torn meniscus repairs, a number of years ago, and have been getting cortisone knee injections. Since having the DVT and PEs (both lungs) in May, the doctors have also been checking my pancreas. I will be getting a endocscopy for EUS this is after a MRCP, CTScans and an elevated CA19-9 bloodwork result. Sorry this was long,but figured as much info as possible might be helpful.