Bursitis usually don't involve both the sides.
This pain may he due to radiculopathy originating from nerve roots of spinal cord. That may be the reason for lower back pain as well.
Next Steps
Can plan to get MRI of Lumbosacral spine to confirm the diagnosis. Pls start with hot fomentation, take analgesic with muscle relaxant, take
calcium and
vitamin d supplement.
Health Tips
Avoid heavy work, avoid sitting down, avoid Indian toilet, avoid forward bending, avoid stair climbing and descending..