Frustrating!!! AF late but lots of BFNs

Hi all

Just hoping for some advice / support / past experiences

Trying for number 2 for a while now - and am now 4 days late for AF (this doesn’t usually happen!) and about 16dpo

Without trying to symptom spot too much I do feel different this cycle and have been very tired and nauseous!!

However, I have been testing since 2 days before AF was due and still just getting negatives.

Don’t know what to think and if AF was going to come I’d rather it came now so we could move onto trying again!

Feel like giving up 😩😭

Thanks for any advice - pic to confirm my lots of negatives!!