How long have you been trying to conceive?

I’ve been trying 4 years roughly maybe a few months longer. Had all the tests and they found nothing to explain medically why we arnt getting pregnant. My husband sperm is apparently amazing ( that made his head grow 🙄 ). Apparently I’m not ovulating but as I have longer cycles I swear the fertility drs are doing 21 day bloods too early ! The opk was CD27 or CD28 and I’m on CD34. I’ve never had one where the left line is darker than the right. I showed my fertility nurse and she was like “ woah “ and that to have one that dark I must be ovulating and maybe I’ve just been ovulating later than predicted / expected. If all this time it’s been just because of timing I’ll be pissed ha.