When I ovulate I get severe pain in my right side. Always my right, never my left. I wonder if it's relevant that all my endo is in my left side and I simply don't ovulate from that side? But, I feel a stretching, pulling, deep pain in my right side. it throbs down my right leg. Lasts about two days full on, but can be like that for four or five days before I ovulate, to a lesser extent.