"i have been on trinessa for a year. it made my periods regular. it made no improvement on my acne though. as for the birth control it is doing it&#039;s job. when i first began to take trinessa my breats would get sore for a few days every month but now they have no effect on them. before trinessa i was using femcon fe. it&#039;s the chewable pill. i used it for a year and had no periods. but it was $60/month. also, if i forgot to take a pill and took 2 the next day i would always get spotting. i haven&#039;t had that problem with trinessa. one week i missed the first 3 pills and still didn&#039;t get any spotting."