late period/ovulation bleeding/confused w my body

according to my app, my whole fertile window (the green week which i’m supposed to ovulate/be fertile) i had bleeding. it wasn’t like period blood or the consistency either. it started light brown and light “flow” then turned heavier and darker towards the middle of the week(but not heavy enough to be a period), then lightened up again towards the end of the week. that has never happened to me before and now my period is a week late. i’m confused because i don’t think i could be pregnant. it could also be late because i’ve been sick with a fever two times this cycle, and this month and started back up on working out again and changing my diet. oh and one point i was super stressed about something. so there’s all kinds of reasons why my period could be late but i just wish it would come already. but does anyone know what that bleeding during my ovulation time was? is that what ovulation bleeding is or what? i’m not even sure i ovulated. i’m all kinds of confused to say the least…