Your doctor should have told you that skipping placebos can potentially cause breakthrough bleeding and/or spotting. It's always possible because some women's bodies just don't tolerate skipping. Also, depending on what pill you're on, it might not work. She should have also told you that.
What brand are you taking? It is a tri-phasic? Or is it the same level of hormones throughout the month? The monophasic are better suited for skipping. But again, some women just find that they can't skip, regardless because their body needs to have a period anyway.
Not much you can do at this point except wait it out. You may have a prolonged period and it might take a cycle or two to get your body back to normal. Your doctor really didn't tell you very much, or give you enough information because she should have covered all of this with you. You may want to consider finding a doctor that is more forthcoming with potential side effects or problems. Otherwise you're just getting really basic information which doesn't cover all of what you need to know.
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