I have gone through your question and appreciate your concern.
Your backpain seems to be mechanical. May be due to bad posture.
Avoid bending forward and lifting weight.
Hot fomentation 3 times a day.
Local
Analgesic gel for local application.
Muscle relaxants and analgesics will help.
Lie on flat hard bed.
Most important dont ignore back pain
As it may worsen day by day.
When subsides start doing muscle
Strengthening exercises for ur back
Regularly. Which is long term solution
By making your paraspinal and back muscles
Strong.
Thanks.
U can ask me back for any query.