"i was first put in tri-sprintec, which worked wonderfully for me, but my pharmacy switched me to tri-previfem. i&#039;ve good news and bad news about this pill. the good news: i&#039;ve not gotten pregnant. the bad news: after being switched over, i&#039;ve realized a shocking change in my mood. i&#039;m much more depressed, and i have developed a case of anxiety. i have experienced several anxiety attacks after being switched to this pill. i&#039;m contemplating asking my doctor to change my prescription. if you wish to not get pregnant, then take this pill, but you may undergo dramatic changes in your mood."