Back pain after lifting heavy weights is most likely due to a muscle or ligament tear / sprain. There is a possibility that there may be a disc prolapse
also, but if you do not have any pain running down your thighs/ calfs or any numbness in any of your legs/ feet, the treatment remains the same in the initial period. Bed rest, heat therapy
, light massage, pain medication for 2 - 3 days should relieve pain. Avoid bendin forwards, lifting heavy weights, sitting on floor, squatting. Gradual physiotherapy
should be started as the pain settles down to train good posture and lifting practices.
If the pain persists beyond three days/ pain running down the legs/ numbness or tingling sensation
in the legs or feet, it would be wise to see your orthopedician/ spine surgeon
Get well soon.