Peak ovulation on day 7, not high fertility

Hi everyone 

I am day 7 of cycle, or day 7 post miscarriage. My bleeding stopped on day 3, and I have small an amount of brown discharge now. I did a test (4peak days) on day 5 which was negative and today day 7, it’s gone to peak fertility. I do have some cramps but other than that, don’t feel like I’m ovulating. Any suggestions ?