updated- question on spotting

I'm confused. Last night I had a tiny bit of blood when I whipped. like a dot of blood but today it's a bit more, not enough to need a pad but its light pink. period is due in 3 days. curious if this is AF early or IB? can implantation bleeding happen 3 days before AF? Help please. thanks

update- spotting only lasted a few hours. and I think I had a metal tates in my mouth for a bit.