Can u stop your period for a couple of days? how?

OCP or progesterone: Taking hormonal contraceptives, such as oral contraceptive pills, or Progesterone may delay the onset of menses. For example, the appropriate timing of oral contraceptives may delay one's bleeding if trying to avoid getting a period during a specific time (e.g. For a wedding).

Yes: You would need to see a doctor, as the best method i can think of would be provera (medroxyprogesterone). However, it may be more than a couple of days, and it does require a prescription.