I have also had hip pain for over 3 years. In 2007 I was healthy, active and playing on two tennis teams. In 2009, I was pregnant and pulled a little muscle in my groin trying to get into the car. I'm not sure if that did it or if it was just the extra weight from the pregnancy causing strain on my hip. Ever since, I've had pain. My hips also 'click' when I do certain movements. I've been to the doctor three times already with no diagnosis. I asked to be referred to a specialist but so far the nurse has not returned my phone calls.
The only relief I've had (temporary) is to take ibuprofen. About 800mg to 1000mg per day. It's not advisable to take that much especially on an ongoing basis. So I try to deal with the pain as much as I can and take Ibuprofen when I need it.
Good luck to you.
-kj