Post Partum Periods

Hi ladies! I know breastfeeding can mess with your period after birth, but wondering if that also means it will be inconsistent for a while? I got my first period again post-baby last month and am now at the 31 day mark in my cycle and expecting it any day (cycle used to range 28-30 days)…took 2 pregnancy tests (albeit expired) and they were negative. Just keep waiting? Anyone else have wonky periods after birth? Thanks!