"i have been on birth control for about 15 years (i dont want kids and can&#039;t get permanent birth control because i have never had kids). anyways...my pills i been taking for years got switched to tri-previfem two months ago and i was told by the pharmacist it was exactly the same as my old pills. the first month my breast swelled so much and hurt so bad...that lasted a few days. i also got really bad cramps..like nothing i have felt before (remind you, i have been on birth control for about 15 years). this month i noticed acne on my chin and cheek...i am 34 years old and never had more than one occasional pimple at a time on my face in my life. i will not be taking this pill any longer...hope this helps anyone looking to try it."