Talk to Gastroenterologist on Muscular Pain In Both Legs

Last few days I have pain in my both legs at different location in different time, especially in the evening. Mostly top side of feet feels. Last month I got medicine for burnings of my feet, I did all the required test, all are OK, even no have suger, everything normally functioning, Some time have problem in constipation but it's normal. So please advise me a good medical treatment.