8DPO and confused?

So I checked my CM this morning, and it was watery with small chunks of brown in it. Does this mean my period is coming? Or could it just be implantation? They were like little gummy pieces of brown, and it didn’t smell like period. I know this is TMI but I don’t know how to interpret this? Has anyone else noticed this before?

Update 7/4: I ended up getting my period, but its really weird because it came 6 days early (my cycles are usually 31-35 days long) and my luteal phase was only 8 days?