Hi, for the past few months I've had my period like clock work. On the first of every month and ends on the 6th day. Usually on the first 3 days my period is really heavy, i constantly have to be changing my pad. Then as the days go by it gets lighter till im done. Well this month i did unfortunately get my period but its much lighter then usual, and im only on my 4 day and im already just spotting. No need for a pad a pantyliner does the job. I am trying to get pregnant so i have had unprotected sex. Can this be a sign that i might be pregnant?