Tmi spotting or period

So my period was due November 13. On the 15th I started to get spotting on and off. Only about three times that day. Sunday morning I had light red and mucous bleeding that was periodically. I have had spotting for the last two days but with all of this no cramping at all and with my cycles i usually get horrible cramping. Anyone heard of decidual bleeding or experience that? Should I take a pregnancy test or just say this was my perkod. Help!