Hello ,
thanks for writing to us 
I am Dr. Vaibhav Gandhi, I am 
Orthopaedic surgeon and spine specialist.
I have studied your case.  
The cause of frequent problem -this kind of pain is due to  compression of 
nerve because of spinal disc bulge. Nerve compression lead to 
radiating pain, which aggravated on long time sitting in same particular position.
Here are my other useful suggestions to you:
Avoid lifting weights 
Sit with a support on your back
If the above do not help, you may need to see a Physiotherapist/yoga teacher
 You need to investigate in the form of - 
X ray spine and if needed, MRI spine and MRI HIP and management accordingly
you are having 
hip arthritis also , after MRI ,if medicine are not giving pain relief  you may need  hip joint replacement
Take care