I had my period on March 17 and had unprotected sex on the 23 . On April 9th I had a light brown discharge which I normally get . Now on April 13 I had blood . A hour later I had brown stuff that looked like it could have been a heavy discolored period . Then after another hour it was just little blood . I don't keep up with my monthly periods so I don't know what this is . Is this a period or sign of pregnancy ? IM SO SCARED . And how long should I wait to take a home pregnancy test ?