What can this be

I have the worse pain in my hips when I am trying to lay down its been steadily getting worse my hips over the last month go painfully numb and it is bearable but it is making me unable to fall asleep and sometimes it even wakes me up in my sleep. Now I have nausea and some cramps. I am sitting up because laying down is bugging me so much. I'm thinking of getting it checked out here soon but does anyone have any idea what this could be