What could it ?

My expected period was yesterday which was Monday but Sunday night I had this discharge of clear mucus with a little pink in it and on yesterday I didn’t get a period but I was spotting pinkish orange now today I’m having light bleeding it’s red and could go for a period but it’s way lighter than my period would be. Anybody ever experience this ? Was it implantation or not ? did the small flow continue or did it stop i’m confused. I also having cramps and backaches