is there a chance it could've been IB?

Hey everyone. 
i was expected to have my period 2 days ago and on the day i wiped once and spotted a drop of blood, thinking it was my period i slapped a pad on, every 3 hours i would check and there was no blood. next day went by, nothing. all day yesterday no blood and no signs of a period and today i'm feeling the same exact way. any ideas on what it could be?