Question: hip joint pain

I only have pain in my hip when I raise my legs up off the bench press.  I begin to sit up and swing my knees up then I get pain in my right hip joint.  If I raise my right foot up on the bench then sit up I can avoid the pain.  Once Im up I can run around, do jump jacks, etc....  It seems to only happen when I lay down on the bench press and try to get up by swinging my knees up.  Any suggestions???

Thank you,

Tim