Bleeding irregularities are the most common side effects of contraceptive pills. If you wish to complete this packet of pills, then switch back to the other brand, there should be no problem with doing that, but I would not recommend switching mid-cycle. I would not worry too much about the bleeding unless you are soaking more than a pad/hour over several hours. Chances are you are just adjusting hormonally.
The answers in online forums are for information only and are not intended to substitute for medical advice and care. Please see your personal health care provider for further evaluation of your individual case.
Debbie Miller, RN