all i can tell you is ~5 months ago i started microgestin after being off bc for 12+ years, and i LOVE this drug, i just ~feel good~ on it. the first 3 months were difficult because i couldnt have lots of sex because lots of spotting & crazy periods, but after month 3 all is normal and my sex drive is the same (high) or better

). now my period is 2 days & light and happens every 28 days. but everyone is different, is suppose.
the pamphlet says after 7 days on the pill youre protected, but my doc said to use it for 21 days before not using a condom.
good luck!