AF due on 21st! So anxious! Possible implantation yesterday

Br

Yesterday I was 7DPO and in the morning for 2-3 hours I kept having sharp cramping in my lower pelvic area and lower back. I'm really really hoping this could be our month!

It has since subsided and it just feels bloated and full.

Anyone else have this in the same boat? Or have had this and got a BFP a week later when AF was supposed to arrive?