Suggest Treatment For Pain In Hip

Hi about two yrs ago I started walking about 2-3 miles 4 or 5 times a week...I have always been active but after about 10 month I started having pain in my left hip....doctors said bursitiis and had several shots in the hip to stop the pain....it always returned especially when I worked long hours on my feet...I had a total of 6 shots with the last beening un floriscopic......My hip contiues to hurt off and on but I don't do as much exercise at all now. Now for the last 5 - 6 months when I down my right knee becaomes impindged and pops when I straighten it up....could the hip and knee be associated or I'm just crazy ?