I think I'm out again

Ever since I started tracking, my cycles went wonky. I started metformin in July and was regular to the day and time until April when i started tracking. I've skipped a cycle in May and I think I'm skipping a cycle again as I am 9 days late. Have taken a couple tests...all BFN. Have some symptoms but it's obviously just PMS/AF showing up soon. Really frustrated. Dreading starting the OPKs next cycle...i feel like I'm obsessed with this enough as it is I don't want to add another thing to obsess over. Just feeling very discouraged this morning