still "bleeding" early period right?

I had unprotected sex April 3rd like 3 days after I finished my period. He finished and everything. On the 9th of April I started bleeding/spotting I guess. It's not even enough to fill a panty liner all day. My period isn't supposed to be here till the 21st. Super regular period never any spotting before. But is lasted 5 days on and off and now it's just annoying. It's just an early period right?