Does anyone have really irregular periods?

Jasmine • I'm a neonatal nurse. I have two little girls and an amazing hubby. My life couldn't be better!!!!
I need help!!! I am trying to track my periods and ovulation but I never know when I am going to start. So my question is how do I know if I am late and when I am ovulating???? Ugh the joys of being an irregular female lol