Period/Pregnant?

Victoria • Happily Ever After Since 2011
Okay, my period SHOULD have happened 6 days ago. I'm cramping but not bleeding. I had unprotected intercourse on the 29th of Sept, had a regular period Oct 13... is there a possible chance that I can be pregnant? I am going to buy a test soon but was just curious to see if this happened to anyone else before they got pregnant. TIA