Suggest Medication For Delay In Periods.

Hi, may I answer your health queries right now ? Please type your query here...I have been on birth control pills for the last 3 years. I usually start my period on Wednesdays. This Wednesday when it was time for me to start it was really really faint. I could only see it when I wiped from going to the bathroom. It has been like this for about a day and a half. Usually my period lasts from Wednesday to late Saturday. Now with it being Thursday evening it has completely stopped. Does this mean I'm pregnant?