Ovulation after miscarriage


I’ve really been trying to conceive this month since I hear we’re more fertile post miscarriage. I invested in the Premom strips and Clearblue OPKs after my D&C on June 17. Right after, premom said I was ovulating at peak. So we tried just in case. Then a week or two and nothing then Clearblue said high ovulation- with no peak- for over a week. I’m so frustrated and feeling totally defeated trying to time sex. Every week it seems like it’s ovulation time but the tests don’t line up - premom and Clearblue. Has anyone else had this experience? How did you figure out ovulation? I don’t even know when to test for pregnancy cuz I haven’t had a period after losing the baby.