"i have been on trinessa for 10 months. so far i have had breast tenderness, fatigue, weight gain, 104lb to 127lb (yes huge difference,) lower abdomen pain. headaches, mood swings not so much but i do cry a lot and i mean a lot. the pill is doing its job although i&#039;ve had one scare. my periods comes three days late and last about 3-6 hours, my period hasn&#039;t been longer than a day. and it&#039;s light very light like spotting. trinessa is a good pill it has done its job but the sides effects are like symptoms of pregnancy. i could do without the side effects."