Irregular cycle help

I stopped taking my BC about three months I had my first period at cycle day 42 then I had a 23 day cycle now a 17 day cycle.. has anyone experienced this and regulated soon after? I'm so ready for a baby but now I'm confused as to when I ovulate.. did I still ovulate on the days glow said even though my period didn't come during the time glow thought it would? Please give me some advice!!