You should consult a physiotherapist for proper assessment and diagnosis.if its not getting better with the medicines , dont take too much medicines as it may cause other side effects. you should be treated according to the problem as it can be a disc bulge rather than being a simple muscle pull. it should be checked whether there is any nerve compression or a radiating pain down the leg or any sensation disturbance.
Next Steps
Go to a physiotherapist and take the treatment. Ultrasonic therapy helps in healing of muscle stretched/disc inflamed,heat therapy increases blood circulation and TENS helps in relieving pain,Exercises will increase the muscle strength.Do it for at least 2-3 weeks.You will get the relief for sure.......In chronic cases ,if not responding(no relief at all) after taking physiotherapy,need to go to an orthopedecian.
Health Tips
For back-at home.bed rest for seven days+hot water fomentation+application of pain killer gel..avoid forward bending, weight lifting, cold exposure , stair climbing.long travelling or driving, no prolonged standing/walking/sitting.