Confused!

Malkia

Every since my miscarriage in late Oct. 2018 I have not had an accurate cycle. It’s been 30 days then 25 days now it’s 28 days. I’ve been taking PV and extra Folic Acid before trying but now I’m ready to ttc again and to get the accurate OPK days I need my cycles to be regular. Any one has had this issue?