"i have been on errin for about a year now. i chose it because i had just had a baby and wanted to be able to breastfeed. i&#039;ve had a great experience with it. no moodiness or weight gain. i&#039;ve been on other birth control pills that were combo ones and those i could tell changed me emotionally but i haven&#039;t had a problem with this one. i can&#039;t relate to others who have mentioned having a period for 3 weeks straight because my period didn&#039;t come back for about 9 months after having my son. but now i seem to have a period every other month and it&#039;s only about 3-4 days max and not too heavy. i would recommend it to anyone especially if you are sensitive to meds or just had a baby and want to nurse."