Cycle questions.. 🤷🏻‍♀️

Sydney • Wife 3.31.18 💍Daughter 5.21.11 🎀 Son 4.27.15 💙Angel 1.21.19 👼🏻 Angel 7.7.19 👼🏻 Daughter 8.11.20 🎀

So back January 21st I had a miscarriage at 5w2d, I just got my first period back March 1st so that was a roughly 40 day cycle before the pregnancy and miscarriage my cycles were fairly regular between 28-30 days give or take. So my question is are these next few cycles going to be a guessing came on ovulation and af dates? When did everything start to even out for y’all and go back to “normal”?? TIA