Spotting?

Help!! So my period ended on the 31st and on Friday(the 3rd) I noticed bleeding. I’ve never had this happened to me before so naturally I freaked out a bit. Just now, I went back to the bathroom and there was more blood. Can this be a symptom of me entering my fertile window? I am currently taking ovulation tests so I know I’ll be ovulating tomorrow or the next day. Anyone have this happen to them before?