When Can OCP To Regulate Periods Be Stopped If Trying To Conceive?

hi! I am a 30year old .my last child birth was 5 years ago. i only took 3 doses of Depo Provera after giving birth in 2005 and since then my periods are very irregular. my weight is 62Kg. I am taking combined OCP to try to regulate my menses. into the 2nd month now. when should i stop the pills and start trying to get pregnant again? fi