12 dpo negative test

So after 3 months post miscarriage this is the 2nd cycle ttc. I use ovulation strips to track my ovulation since I have been having irregular periods post miscarriage.

Concluded that my ovulation happened on 23/01/2023 and tried almost the whole around the date. I have no symptoms apart from lower back ache. My af is due in 3 days and I have no PMS symptoms either.Today is 12dpo and I got BFN. I’m losing hope now. I’ll be glad if at least I get my periods on time at this point so that I can try next cycle 🤞🏻