Idk how far along i am 😖

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 :)
So we are positive on the teat home and hospital but sadly my cycle was So out whack they can't confirm how far I am. I'm 3weeks and 3 days late from what I thought I would start!! I go back today to fill out paperwork and I hope I can figure out how far along we are!!!!