It depends. Bleeding during active pills can be normal if you are experiencing spotting and you are just starting your birth control, have had hormonal fluctuations due to reasons other than the pill, or have started new medications or pills. It’s not normal if you are bleeding heavily enough that you are filling up a pad or a tampon every few hours (like a normal period).
If you are concerned about the bleeding that you are experiencing, it’s a good idea to speak with a doctor. In the case of heavy bleeding, it’s best to head to an urgent care provider and inform them of your birth control usage along with any other medications you are taking or have started. Note that you will need to provide the exact names of all medications so that a care provider can best understand what is happening to you.