Ive been having hip pain bad since about 16 weeks. My doctor said there's a muscle that gets stretched out when you start getting bigger, its normal and he said a maternity belt would help. I'm too small for a belt just now so I haven't tried it.
Also, you get worse hip pain after you've had a baby before, so its worse the second time around. I didn't have any hip pain with my first. Don't know if this is your first or not.