I fell today and now I am having severe hip pain. What could it be?

I slipped and fell this morning and I am having severe pain in my hip area. When I fell it was on a tile floor. I heard an audible pop or crack at the exact moment I felt the pain. In fact I told my son that I "heard" the pain. The pain has gotten worse as the day progresses. It hurts to lie down it hurts to sit and it hurts to stand. The pain is mostly in the front at the crease and upper thigh and raidiates to the buttock. I cannot see swelling but I carry some "extra" weight in my hip area. I am in my mid 40's if that helps any. When I try to walk without a limp my foot wants to turn in to the right and I pull in that direction.