I'm Expecting My Period On Tuesday (in 5 Days) But

I'm expecting my period on Tuesday (in 5 days) but today I wiped and noticed a little red blood and then the rest of the day I spotted pink. My period was 5 days early last month and it followed with an increased amount of clear discharge. I'm always on a 26 day cycle, very rarely has thay ever changed. I also have suddenly been experiencing spotting during ovulation. Last week I also noticed some green discharge. Any ideas? Why is this suddenly changing?