Hello, my name is Dr.Dorina Gurabardhi. I understand your concernew.
Pain in the lower back may be linked to the bony
lumbar spine, discs between the vertebrae, ligaments around the spine and discs,
spinal cord and nerves, lower back muscles and the skin around the lumbar area.
In your case I think it is more related to the back muscles.To diagnose you may need other analysis such as X-rays, MRIs etc
Some advices that I can give to you are :
-Ice your back to reduce pain and swelling as soon as you injure yourself.
-Apply heat to your back -- but only after 2-3 days of icing it first
-Take painkillers like Advil, Aleve, or
Motrin, will help with lower
back pain.
-Maintain good
muscle tone in your abdominal and lower back muscles.
-see a doctor if it doesn't get better,.Hope my answer was helpful, if you have any other questions I'll be glad to help, thanks!