Hello, My Wife Has Had Chronic Off And On Leg

Hello, my wife has had chronic off and on leg pain in her right leg for over 2 years now. The pain can be severe some days. About a year ago her right foot had swelled up during the night and woke up to severe pain from the inflammation. We put her foot in cold water at that time and it releived her pain. Had visited two hospitals that day and she was told from one it was sciatica and the other said planterfiscitis, something like that to say it was a bad sprain. She isnt overweight or very active and also had mild swelling in the other foot the same day. We have had issues with infertility and she was in for an operation to reshape her uterus and they treated some signs of endometriosis. Were trying to find a way mainly to treat her ongoing leg pain and are looking for leads towards treatment. Shes done 3 month of physiotherapy without results. What is your opinion?