Cycle Day 31 BFN

Hi all, I'm on what I presume would be cycle day 31 after my first postpartum period. I am almost 14 months postpartum and still breastfeeding. I bled for 2-3ish days last month. I feel super pregnant but I'm still getting BFNs.

My question is how long did it take you to get a BFP? Could it still be too early to test, or should I be getting a BFP by now if I am pregnant?

It's so hard to chart accurately while breastfeeding. :/

Pictures from this morning with first morning urine. They are obviously stark negatives.