Random bleeding?

Have any of you had random bleeding that happened way before you period is due? I had an episode of bleeding 10 days before my period. It was red blood when I wiped and I had assumed that maybe my period was early. It only lasted a couple hours. Now, 8 days before my period, I just have brownish pinkish discharge and light cramping and soreish boobs. Which are my normal period symptoms. What could have happened?