7DPO spotting

Woke up this morning to go to the restroom and I have VERY light pink spotting. Glow says my period is in 7days and it’s usually right on. I never spot in between cycles. Could it be implantation or is it still to early ? It also looks like it has CM in it? Only had the light spotting once

Update: took pregnancy test at 9DPO and it’s POSITIVE !