How long does it take for birth control pills (portia) to start working ? & also how long does it take to help prevent future ovarian cyst ?

Short time: Contraceptive pills are most likely effective within 1-2 weeks of beginning. However, it is safest to use a backup method during the first cycle, unless you're starting the pills immediately during a normal menses. Not all ovarian cysts are suppressed no matter how long you are taking the pill. There should be some suppression of cysts beginning with the second cycle. It may not work for you.