[Lani]

True hip pain is usually felt in the groin in the front--bisecting the crease which marks where your leg leaves your trunk (similar area where inguinal hernias occur)

Pain along the bony prominence which hurts if you lie on your side on a hard surface(if you are not "well upholstered") is usually trochanteric bursitis, inflammation in a sac of fluid which develops in response to irritation to try to cushion the bone below from the offending irritation, which can be from tendon rubbing or direct trauma or overuse of muscles which pull on the areas adjacent (usually a slightly different location, but may be hard for one to exactly localize without knowing the anatomy well)

Other causes of "hip pain", especially those not in the bisecting point of that crease are referred pain from the back, pain from irritation of a branch of a nerve from sleeping on one's stomach, among others/

Hip pain can be differentiated from other pains often because it is present with bearing weight on that limb and not when bearing weight on the other (in contrast to referred back pain), sometimes it can be differentiated by
assuming a marching soldier's position and turning the hip in and out by
bringing the sole of the foot from that position towards one's mouth or towards one's "sitting bone" or "bottom"

I would not venture to diagnose your pain, just letting you know there are a
lot of other explanations besides bone mets for your complaints.

Hope this helped!