Implantation blending and cramps or AF?

Alyssa

So I’m 11 DPO today and I’m not supposed to get AF for another 3 days... but just tonight I noticed slight cramping then I had a tiny tiny bit of spotting, it’s barely there when I wiped. But now I feel like I’m having period cramps. They come and go, and aren’t too intense.. is this most likely AF? Or can it be IB? Did you experience IB?