This is on the outside of the hip, at the corner.
Always thought I was immune given my flexibility but, who knows..
I love to stretch but, I haven’t been doing all of them over the last three years with my shoulder operations.
I can do em now and should go back to regularly stretching...
“This is on the outside of the hip, at the corner.”
Outside? Sounds like a hip pointer. I thought it was pain deep in the hip joint itself.
I think you are overdoing the stretching.
check out this video....."Slow Exercise"...came out of osteoporosis research.....strengthens the muscles with very heavy weights at a slow rate....In less than a year all my weights have increased x2 or x3 depending on the exercise.
https://www.youtube.com/watch?v=K05Db4WGxXg
Also the life-style for longevity here: https://www.youtube.com/watch?v=DPn79iHSuOw
I follow both...got my commercial driving license 3 years ago at age 70.
Now I just started a new job manually loading trucks.
What doesn't kill you makes you stronger.
Try to stretch the ligament that goes over that corner. It helped me.