I found huge relief doing what one comment suggested, and you can do it at home. Its called" hip flexor release". If you search those three words, you will find a number of YouTube videos and articles that provide various techinques for loosening the hip flexors. The one that works best for me is the myofascial techniques which uses a small ball. I happen to have a hard foam ball that I confiscated from my son. It works wonderfully. It provides a super deep muscle stretch of the hip flexors that all work the hip joint. Anyone who sits or stands alot (or sleeps on their side in one position) can suffer from these supportive muscles tightening up. Age can also make the muscles less pliable. Honest. Do yourself a huge, huge favor and look it up and try out some of the technique. They resolved my issue - no meds, no doctor, no cost, did it at home. Best of luck to each of you. I know the pain and it's miserable.