Unhealthy period cycle??

So all throughout my life since the first time i got my period at abouuut age 15, my cycle has never been a 28 day cycle. Most times i'm late or i skipped an entire month, even two! Throughout 4 years, normally healthy (no bad illnesses or anything dramatic other than acute depression and anxiety), my period has been irregular. Nothing has been physically showing to give signs of any reproductive disease. I have been single all my life and has never had intercourse with anyone else. I tried seriously tracking it since 2 years ago but the predictions on apps were always wrong. As we speak, i've been 24 days over my next period prediction. I never told a doctor about this.. Condition. Is there seriously something wrong with me?