No peak ovulation test after miscarriage

Stace
I had a miscarriage last month and finally got my period last week. Started ovulation testing this week with Clearblue advanced test. First day, low fertility. Next two days, high fertility. This morning, low fertility. I expected to get a peak fertility today, not low fertility. Very frustrating. Trying to get back to feeling normal and feel like I just had a set back with this morning's test.