Ttc with irregular periods

Erin
Just wondering if anyone had any advice on conceiving with irregular periods. I came off birth control ( nuva ring) in late September and have only had one period in the beginning of January induced by taking provera that my dr. Gave me after I hadn't had a period in almost 3 months. After said period I began trying to track ovulation as normal and got a bfn this month. And my AF was due on 1/31 and is now 4 days late and I'm assuming I'm just not going to get my period on my own therefore not ovulate. Any ladies had any similar circumstances?