Having pain on left side of hip. starts at top of tailbone and goes around my hip. hurts to bend at the waist. what could be going on?

Many answers: You may have a back problem or even shingles at its early stage. If persistent or getting worse, see doctor.

Pain: There are many conditions that could give rise to your symptoms - most of them very treatable. You need to see your primary care physician. If he/she cannot find the cause a consult with an orthopedic surgeon is in order. Don't wait too long.