If you took your pills is correctly, even though bleeding is abnormal, it is unlikely that you are pregnant. It often takes 3 to 6 months for abnormal bleeding to settle down after beginning birth control pills. I would not be overly concerned. Normally you do bleed only during the placebo pills and not during the active ones. Unscheduled and breakthrough bleeding
does not mean that the pills are not working. On the contrary it working fine. Continue to take them as directed.