Late period or chemical pregnancy?

Jessica

Hi ladies, I had a faint positive on Saturday and was due my period on Monday, I was going to wait a week to do another test and then yesterday I had what looked brown implantation bleeding on my pad and then today this happened? I’m not sure it’s my period or a chemical pregnancy? I’m w bit nervous because I’ve had both an ectopic and chemical pregnancy in the past. Any help would be appreciated.