Hi, i just had a quick question. I have been diagnosed with PCOS, and have been given Dianne 35 birth control pills for this reason, and also to clear up my acne. I also plan on using it for contraceptive purposes just to be safe. My question is, since my periods are irregular (the last one i had was 3 months ago and still no sign of getting it soon), am i able to start the pill at any time or does it have to be on the first day of my next period (i just don't want to wait that long, as it could take months). Thanks!