Is it bad to keep taking two birth control pills? Will it mess up my body?

I take my birth control pills pretty late at night cause of my job. So sometimes when I'm at home I fall asleep before its time to take them and I forget. So the next day I take two when it's time. But every time I do that I feel a little sick the next morning? Is it bad to take two pills at a time? Could it mess up my body?
Is it bad to keep taking two birth control pills? Will it mess up my body?
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