I was taking my pills wrong, what do I do?

For two days I was taking pills prescribed by a doctor. I failed to realize that I was supposed to be taking two pills twice daily. For the past two days I have only been taking one pill twice daily. I don't know if I should just start taking two pills tomorrow or not. Any help would be greatly appreciated. I would normally just ask the doctor, but since it's the weekend the office is closed, and also, Google gave me no help.
I was taking my pills wrong, what do I do?
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