Approximately how long would methylphenidate stay in your system after dosing 2 days in a row?

I dosed on 20 mg methylphenidate yesterday, and dosed on 40 mg methylphenidate today. I know that methylphenidate stays in your urine for 1-2 days but would doing it in this manner make it stay any longer than that? I am 17, 5 11 about 140 pounds, and pretty fast metabolism. Also, would drinking lots of water speed... show more I dosed on 20 mg methylphenidate yesterday, and dosed on 40 mg methylphenidate today. I know that methylphenidate stays in your urine for 1-2 days but would doing it in this manner make it stay any longer than that? I am 17, 5 11 about 140 pounds, and pretty fast metabolism. Also, would drinking lots of water speed up the detox process
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