Hip pain

Does anyone else have severe hip pain with their pregnancies.....I'm 18 weeks and starting around my 15th I think I've been having a hard time with my hips....it varies between the right and left....currently the left.....if I'm in a lunge position in bed a literally have to have my bf roll me to my side in order for me to get up.....if Im there too long I can't move at all....and I've been at work a couple times and my hips have given out and I've almost fallen....just wondering if I'm the only one who's having such a difficult time with this ....cuz sometimes I can barely walk