What do you think? (TMI pic)

Tiffany • 35 years old w/PCOS. Conceived a girl (born Jan. ‘17) on Clomid. Second girl born Oct. ‘20 on Fermara. Now pregnant naturally with baby #3

I am 15dpo. AF is due tomorrow, but I haven't had any signs of her wanting to make an appearance. But I saw this today on the toilet paper when I wiped:

So do you ladies think this is the beginning of AF or could this be from implantation. I haven't had any IB so far...would it be too late for that?

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