Hello, Thanks for your query. From description , it seems you might developed muscular or ligamentous strain over back . I would suggest getting this evaluated by an orthopedician for an accurate diagnosis and appropriate management. You may get the MRI of the area affected under his/her guidance. Meanwhile following measures will help with the pain • Lie on a hard bed. • Anti -inflammatory drugs like Tablet Motrin 1 tablet as and when required • Avoid forward bending. • Avoid strenuous activity & lifting heavy weights. • Apply diclofenac gel on the affected area. Warm compresses will also help. I do hope that you have found something helpful and I will be glad to answer any further query. Take care