My period usually last for 5 days but it last for 7 days this time my period was April 21 2014 it went to April 27 2014 when should I take a pregnancy test?

Around June 10. Assuming you don't get your period.

If your period longer? Did the seem like there was more stuff coming out? As scott said you'll need to wait to test, but it is usually if your period is shorter that people get concerned.