New for me

Me
So this is my first post and I've been tracking my cycle for over a year. I started my period two days early and it felt like it always does but I noticed that my blood had a lot of super stretchy cm mixed in it. I've seen it before but only once every once in awhile, but this time it was the entire time throughout my period. I was on it for my normal 4 days, but then I spotted for three days, although today is the third day and it's a lot lighter but still brown tinged. I also normally barely have any cm at this point in my cycle and I still have a lot of super stretchy/creamy/white cm