What is this

Hi I’m due my period in 6 days but for the last 5 days I have had little blood spots in my discharge. It was heavy the first day and seemed to be gone this morning and now it’s back heavy again it’s almost orange in colour? I’m waiting until after my period to visit my doctor but has anyone any idea what this could be. I was on 2 doses of antibiotics in the beginning of my cycle and I have been taking my pill properly