help! irregular cycles- 1st time w/ OPK

Hey everyone! I'll try to keep this short and simple haha but DH and I have been TTC since November. Had a 39 day cycle after birth control, but then went on to not having a cycle for almost 4 months. The only reason that cycle finally showed is bc my Dr. had me go back on birth control for a month, so I'm unsure if it was even a "real" period 😕 but after it ended I started using Easy@Home opk. But since my cycle is so out of wack, it's hard to tell if/when I'm ovulating if I am at all!! Let me know what you guys think!! I appreciate it 😊😊