For those who regularly track their cycles..

What usually happens after you have an "off" cycle? I have an average of 33 day cycles, and in the past 6 months, they have ranged between 32-37 days. The month before I fell pregnant, my cycle was actually only 30 days, so I'm concerned about what the next month's cycle was likely to be, so I can better establish an idea of when I ovulated the month I got pregnant.