Car accident and period pain

Hi guys so I was in a car accident a few months ago. I've been having pain in both of my hips and my lower back. I've noticed that during my recent periods I have the normal cramping that was there before but now there's really painful pinching in my hips and lower back so bad that I can barely sit. I've been going to physical therapy for the pain in my lower back and hips but I'm not sure if I should bring this new pain up to my physical therapist or if I should see my primary care. Do any of you have any advice on what I should do?