40 days and AF is no where in sight!!

Kristin • 27 married army 2 girls ( 3 & 8 ) expecting our 3rd and final princess. recent miscarriage (04/24) we found out our rainbow is due 02/13/18 :)
Well I'm 40 days since we had our Mc and idk what's up. We haven't done the baby dance since may 20 so there could be a slim chance maybe. I test tomorrow.