Orange spotting?

I have been TTC for 4 years. My period is finally regular. I have PCOS and hypothyoridism. This past week I have been exhausted, tired, moody, irritable. I had my last period only half a day. I have had horrible back pain. Tuesday I woke up with severe cramping. I threw up and had awful diarrhea. I couldn't eat anything but toast for two days. Today I go to the restroom and I have orange spotting. I have never had that. Any idea what it could be?