My TWW is on it’s way to a 3WW

I am so disappointed, frustrated, and so so upset! I am 6 days late for AF showing. I think I am about 20 dpo (if my ovulation tracking was correct).

Only BFNs. Waiting the two weeks was rough and then now I am on to “how much longer do I have to wait?”

Anyone have a BFP at this point?

Any advice from experience?

My husband and I have been trying for 6 months! We track ovulation and have started using preseed. I am unable to do bbt because I work night shift half the week. There is no good time to consistently take my temperature!

Positive ideas or experiences would be greatly appreciated!