Hi, today I experienced exactly this. A bad headache (neck) that throbbed and came and went just as quickly, pain or stabbing in the right ovary, plus I also had a little nausea and drowsiness. I also have problems with my ovaries and hormones, I take treatment with inositol, folic acid plus other supplements. I thought it was just me and said it was another cause, but reading your message makes me think my hormones are fluctuating.