af or implantation bleeding

af is due tomorow buy I jst wiped and had what looked lyk spotting and a lil but of cm. but Idk if it's just a light af or ib I never notice af as spotting Its usually a darker red. but mayb it's just a coicendence. I really hope it's ib. but Idk. I I thought it might've be af so I inserted a tampon. than removed it and it was a really light pink.what do yll think.