"i took yaz after i had my son. i was on it for 2 years and had no problems. i stop taking it so i could get pregnant. after my daughter was born i decided to go back on yaz since i had no problems before. i just recently started the pills, i am starting the 3rd week and i have had breakthrough bleeding for 1 and 1/2 weeks straight now. i am so feed up with it. the whole reason i go back on the pills was to keep my bleeding regulated. so, i am thinking about switching to loestrin24 fe. i am going to give yaz until the end of the pack and if the breakthrough bleeding doesn&#039;t stop then i am switching."