Had Sciatica nerve pain due lower back injury back 12 weeks ago. Been in physical therapy to stretch tight hamstring muscle on left leg and lower back. Over all I am somewhat better however hamstring muscle is still tight and on occasion lower back pain flares up. I’m 57 and workout about 2 times a week. However I’m afraid of going back to the gym until I feel more secure with left leg and lower back. X-ray shows no hernia disk problems however I have mild scoliosis and a possible bone spur on lower back. No MRI done yet to confirm. Not sure what to do next. Had doctor give me a shot of lidocaine in lower back which helped for two days but then back again to the tightness of hamstring. So not sure what to do next?