Totally normal. Your pelvic bones are shifting so baby can fit through the birth canal. Unfortunately not much helps with the pain....try tylenol and a heating pad.
I have a lot of pelvic and hip pain all the time i am 27weeks and its even hard to go to sleep at night from the pain.. sux but its worth it in the end.
I thought it was my hips widening but I thought it was too early still.
I had a thick set to begin with lol so this is weird for me to be bigger.