"i have just started my third month of previfem, and i have had almost no side effects! my breasts have grown so much though!(not that i&#039;m complaining) this was my first birth control and i&#039;m very happy i chose it. it makes my periods much lighter, and if anything it increased my sex drive. i&#039;ve noticed that i&#039;m not as moody when i&#039;m on my period, and i am so happy about that. i have had a very pleasant experience so far."