hi i had gone through your query and understand your concerns. i would come up with the possibility of DEEP VENOUS THROMBOSIS
may be the cause for your sufferings.
-doppler study for venous system of leg may confirm the diagnosis.
i advise you taking Homeopathic
medicines gives safe and permanent cure for your complaints
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints
I hope this is helpful for you, thank you