Accidental birth control overdose?

[evewithanapple.livejournal.com]

I started taking Alesse at my doctor's recommendation in January, because I was dating someone and wanted to be safe. I read the instruction, but read them wrong, and so I've been taking a pill every day pretty much since I started. I'm told, though, that I should have been taking a pill every day for two weeks and then going off the pills for another week. I haven't been having sex, so I'm not worried about being pregnant, but I'm wondering if taking a pill every day for so long might harm my health in some way? I have been spotting for the past few days, but haven't had any other symptoms.