Hey honey,
Sorry to hear you’re frustrated. It could well be that you are having an anovulatory cycle but have you noticed any ewcm or cramping, backache etc. prior to now? It might be that you ovulated slightly earlier or perhaps it will be slightly later. I always ovulate on CD18 (today in fact) and I know because I have super strong ovulation symptoms like nausea!
Basically, try not to stress, I know it’s hard not to and that’s where things like opks and temping can be a help but also a hindrance. Big hugs! Keep going! Xx