I have to say if you're 18 dpo now with no AF then you'd have to be in with a bloody good chance of a BFFP!!!
Are you on any Pregnyl for Leutal support?? That's great you've got the 2 5 Day frosties as well. Sounds like it was a very successful Cycle for you both😊
Fingers crossed/Babydust & prayers being sent your way for s sticky!!!😊