"i just switched from a different birth control brand that i was on for 2 months and switched to mononessa. the first 3 weeks of being on mononessa i had a lot of irregular bleeding. now i&#039;m taking my inactive pill and i am not bleeding at all. i am very frustrated. since it is my first month i am going to give this new pill 1 more month and if i still have irregular bleeding then i am,switching. however, on a positive note, it has cleared up my acne and i am loving that."