Pregnant with irregular period? Anyone?

Anyone here get pregnant with irregular period? My period used to be so regular and come on time until recently, it can be somewhere around 31 - 70 days.

I’m trying to conceive, <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> since day 20. It’s CD31 but still -ve OPK, no watery discharge.

If you got pregnant with irregular period, what did you do? Please share~ I need your tips and helps!