Twinging / fluttering feeling near right ovary area on CD23 what is this???

Kristen
For the past few hours I have been getting this twinge/flutter feeling near right ovary every 5-10minss. Bit of back pain. I took opk on CD6 (peak). This is my 2nd TTC cycle after Mirena removal on May 22. Anyone else had this symptom???? Please help!!!!