How can I get pregnant fast with irregular?

Ovulation kit. The biggest concern with irregular periods is that you may not be ovulating. If you are ovulating, it is most likely that it is occuring between 10-14 days from the first day of your period, regardless of the interval. An ovulation kit can show if this is the case. If you're not producing eggs with each period, there's really no reliably quick method for getting pregnant without some medical help.