Is a withdrawn class included in medical school GPA? Is a Pass/Fail class?

No, a withdrawn class will not be included in your medical school GPA. However, you should not make a habit of getting them because it can hurt your medical school application.
To learn more, read more about medical school and withdrawals.

Also, a Pass/Fail class is not included in your medical school GPA regardless of whether or not you passed or failed the class.