Spotting

I have been using the same birth control pill for about 10 years and take it around the same time each day. My fiancé and I also always use condoms because I’m paranoid about getting pregnant. As far as I know, the condoms have always worked correctly (no breaks or leaks). I am set to start my period on Feb 18, but I have been spotting the past 5 days, which never happens. Any advice or insights into what might be going on?