Suggest Dosage For Althea Pills

Hi, i'm taking althea pills and on the dosage says : Start taking the tablet orally on the 1st day of menstrual period or any day as long as not pregnant but use condom for the next 7 days. Take the tablet marked with the corresponding day of the week..

is it applicable only on the first pack? ive had intercourse without condom during my 2nd pack and is on my 5th day pill, i missed my period during my 7 tablet-free days.