Dance and hips

My hips are really hurting quite a lot from dance earlier. I have dodgy hips - I get a lot of pain from them sometimes, but I don't really know what is wrong with them, despite X rays and lots of physio appointments. The X rays showed my hip joints to be fine, and the physio just got me to work on my core stability and told me not to do things that hurt, which wasn't terribly helpful for dance. I don't actually think it is a core stability issue at all anyway, as basically the things that make my hips hurt are trying to do box splits, and walking. Dance generally doesn't, but I only have to walk for a few minutes carrying a light handbag and I start getting pain, and I think if it was a core issue then it would be a problem when dancing rather than walking, plus it feels like it is the joint rather than muscular pain. It crunches and clicks a lot too, and if I stand in 5th position, which is pretty essential in ballet, it does this weird looking popping thing if I tilt my pelvis forward and backward (sounds unnecessary, but you do it more than you would think!).

My dance class today was basically a limbering class, so warm up and then stretches and some strengthening exercises. We did a lot of work on box splits - firstly sitting with legs out in second and stretching over each leg, which is fine, then stretching forward for a long time, which was starting to feel slightly uncomfortable. Then sitting with our legs out in second against a wall and pushing as close to the wall as you could get, and then laying on our fronts with our legs out behind us against a wall, and again pushing into the wall. I should have known that doing all of this would really set off my hips, but I kept pushing myself, and so did the teacher (who doesn't know about my dodgy hips). I always thought only old school or Russian dance teachers did the physical pushing thing, but seemingly pretty little young English girls do too judging by the lesson today! I am now in quite a lot of pain, and anticipating not being able to walk when I wake up. I have had some Ibuprofen, as I am hoping the anti inflammatory element of them will kick in and calm it down a bit, plus obviously the pain killing side would be fairly welcome right about now. I think I will make an appointment to see a dance physio that I know of, as any NHS physio will just tell me not to do things that hurt it, like standing in 5th position or trying to do box splits, and that isn't practical for me, so I am hoping that if I see a specialist then they will be able to suggest something that will actually help, as this has been going on for years now on and off. I am sure I am not meant to have hip problems at my age....