I had pelvic girdle pain for the duration of my first pregnancy which subsided quickly after birth, but returned quickly in my second pregnancy (miscarriage). 18 months on I still have a popping, clicking and grinding from my SI (left) area, which worsens during menstruation, climbing stairs, and lying down. I have attended physiotherapy who have assured that my joints are aligned. Should I see an orthopaedic surgeon for an mri?