Birth control to conceive?

I have extremely irregular periods that range from 27days to 105. If i took bc for a month and quit it when i ovulate and take it again until s few days before ovulation so i can regular my cycle would this be effective? My last to cycles have been 75 days and 105 and right now im on cycle day 85. Or what can i do that woul be better to quickly regulate them. I exercise and eat healthy so i dont know what to do.