"i&#039;ve been using this pill for approximately 2.5 years. i have never had any trouble with it, never gotten pregnant. disclaimer: i do take it everyday, hardly ever skip, and when i do forget, i double up the next day, so i think i&#039;ve got myself covered. i did not experience weight gain (but i&#039;m pretty physically active 5&#039;3 120lbs). cramps, well sometimes but not bad, no problems with acne, no mood swings (unless i&#039;m on my period, but that&#039;s a given). if you&#039;re young and seriously unprepared for the risk of having a child, i would recommend making sure your partner still uses a condom even if you&#039;re on birth control, trust me (3 years and its worked for, knock on wood)."