If I possibly missed my LH surge, when should I test?

Silver • 👶🏻9/23👶🏻4/22👶🏻12/19❤️👩🏻‍🤝‍👨🏼🐕🐕

This hasn’t happened to me before, so looking for some advice! 🙂

I didn’t get an LH surge this month. The 3 possible reasons are:

1. I missed it. I usually get positives for around 36 hours and I was testing at least every 24 hours though, so this seems unlikely.

2. It hasn’t happened yet. I’m cycle day 19 and usually get a positive OPK on CD15 or 16, so maybe it was just a stressful month and it will still come?

3. I’m not ovulating this month. I am still breastfeeding, but my cycles have been regular with a consistent positive OPK for 5 months, so this seems less likely, but always possible.

If I missed my LH surge, when should I test? Should I aim for the day of my “missed period”? But I’m wondering if my period will even be on time…