Implantation? I'm irregular, last cycle 42. I'm 6d late & I've had like 4d of spotting, faint pink, like a little dot of blood in mucus. I'mSexuallyActiv

Implanation bleed. Implantation bleeding is much more common on the internet than in real life. It occurs rarely and exclusively in someone who is pregnant. The only way to know if someone had implantation bleeding or just irregular menstrual bleeding is to wait and see if you are pregnant. If your test is positive then this was implantation bleeding. If it is negative then it is just irregular menstrual bleeding.