What Causes Right Sided Pain That Radiates From Lower Abdomen To Back?

I m 55 and have had cyst on right ovary within the last year.have had several ultrasounds and cyst has remained same size. Now I m having right side lower abdominal pain, pain under right rib that move to back. Pain increased on right side after sex. Am seeing gastro doc ... Return to Gyn is in order too?