Never getting a positive opk

Emily

Day 24 of my cycle, no positive opk yet. Glow keeps pushing back ovulation date, and thus my expected period date. I have no idea what my cycles are because I had my mirena removed in May and got my first real period in July. Has anyone ever gotten pregnant without getting a positive opk? Worried that I’m not ovulating since it took 62 days to get my period back after mirena, and now seems like I’m headed for a 40+ day cycle now. Ugh.