Hello well my question is me and my husband had unprotected sex two days before me ovulating two days after that I began to bleed (light) period blood, the next day it was a heavy flow of blood this only lasted three days... just keep in mind that my normal period wasn't due until two weeks later and it normally lasts up to 6 days... I was just wondering what could cause this

Honestly, this sounds normal, sometimes your period regularity can vary. If it continues to be irregular, I suggest seeing a doctor, but for the most part, this is completely harmless.