Unexpected CM 8 dpo 🧐

I’m on my first round TTC since having my son and breastfeeding. He is 11 months old so it’s generally only at night at this point(love to eat).

I am about 8/9 dpo and have been having this cm after some sharp pains yesterday and dull cramping all day today. Sometimes it seems to be almost yellow. Is this just normal for a period so soon after having a child or could it be a sign of implantation? I feel like I don’t even remember this from my first time!

Thanks so much in advance for the look.