Implantation Bleeding already?!

Christina • We're now a happy family of 4!

Typically ib shows 7-12 dpo. I'm currently 5 -6 dpo and had textbook ib this morning. Could my calculations be 2 days off (had an lh surge on the 23rd and no surge the 21st or 24th. Didn't test the 22nd) or could it show 2 days early?

I know... "only a small percentage of women get ib." I'm one of them; trust me, I know my body.