i had unprotected sex with my bf and the day after i bought plan B i only took 1 pill 5 days later im bleeding brown blood is it that im pregnant?
No it doesn't. Anytime you take Plan B you have the chance of bleeding.
But I'm afraid you will have to wait for some two weeks after the unprotected sex and take the pregnancy test, because Plan B is not as effective so long as five days later... you should have taken it sooner. And now the hormones from Plan B are very likely to cause spotting and weird bleeding.