Does Althea Tablets Delay Menstruation?

hello po..i am using althea pills and i am wondering why until now still havent had my monthly period..i consumed almost three packs already.I started 1st week of may and follwed that 7days with no sexual intercourse.Does taking althea pills regularly affects my menstrual cyle?unfortunately i wasnt able to read the instruction that there is a seven tablet fee day?i take the pills regularly talaga..