its not a sufficient explanation of your problem. is there any pain in lower back, increases by bending, long standing or sitting, increases by sneezing or coughing? any X-RAY or MRI done?
itsgood that you are going for physiotherapy, continue it, chronic conditions take more time and require the precaution too along with minor changes in your activities and lifestyles.you will get relief for sure. PHYSIOTHERAPY - Ultrasonic therapy, IFT,SWD and the exercises are the main requirement of the treatment regime.
Precautions- avoid forward bending, weight lifting, long standing, long sitting, excess walking. cushion support while sitting,cold exposure, prolonged travelling and low sitting(Asian commode)
Core Strengthening Exercise- Straight Leg Raised With Toes Turned Outward, repeat 10 times, twice a day.
Hams Stretching- lie straight, take the leg up, pull the feet towards yourself, with a elastic tube or normal belt. repeat 10 times, twice a day.
Quadriceps Exercises- Lie straight, make a towel role and put it under the knee, press the keen against the role, hold it for 20 secs. Repeat 20 times twice a day. This will help relieve some pain.