Implantation Bleeding?

What does implantation bleeding look like?  I've never noticed it before with my previous pregnancies.

from what i've heard it is just very light spotting.

I had cramping and very light spotting with this pregnancy on the 9th day following IVF.  Nothing with my first two pregnancies.

Usually implantation bleeding occurs about 6-12 days after you ovulate. Now, some women CAN have delayed implantation bleeding that shows well after that time. I don't know how rare or common that is. But it is pretty much just like spotting.