Ovulation After Miscarriage

Guys, I had a miscarriage August 25. Based on digital OPK kits, I got blinky smiley for four days and hit a peak smiley on Sept. 18. I kept doing the opk kits to try to understand my body. Since then I have started getting blinky smiley faces after my peak. Anybody heard of ovulating twice after Miscarriage? I still haven't gotten my first regular cycle.