Maybe, maybe not
I had irregular periods for almost two years before I got pregnant. I even went to see a physician who specialized in female sexual issues. We tried a couple things but my periods were still very irregular. My husband no I decided just to stop any form of birth control and see what happened. Two weeks was all it took for me to get pregnant.
Sometimes the irregularities can be too bad and complicated that you need help in deciding if it can affect your chances.. but sounds like you had a GREAT outcome :)