Please visit a good Physio near you.

It can be a Muscular strain or impingement...

Physiotherapy treatment and stretching exercises

This pain can be due to any muscle sprain or can be due to any disc bulge.it should be assessed first and need physiotherapy.

Bhujang Asana – Lie flat on your stomach, keeping the palms out, bend the neck backward, take a deep breath and while holding it for 6 seconds, raise the chest up. Release breath and relax your body. Repeat the exercise 15 times twice daily.

This could be because of the condition know as Sacroiliatis.

Pain above hips is mostly of si joint or a referred pai  from l5 s1 facet ...these are the commonest....si pain at this age is mostly because of seronegative inflammatory arthropathy Kindly consult a pain specailist for ur proper evaluation n treatment

Most Probably You have Muscles Strain.

Hello, Low back pain is caused by injury to a muscle (strain) or ligament (sprain). Common causes include improper lifting, poor posture, lack of regular exercise, fracture, ruptured disk, or arthritis.Often, the only symptom is pain in the lower back.Most low back pain goes away on its own in two to four weeks. Physical therapy and pain relievers can help., for muscle strain and sprain.  Avoid lifting heavy weight, sit, stand and walk straight, you can do back stretching exercise to prevent backache, Consult orthopedician.