Last cycle my tests started getting darker cd 21, positive cd 22, peak on cd23.

This cycle I'm on cd 21. Had some darker tests yesterday cd 20 so was expecting a positive today but seem to be lighter especially the one this morning. I haven't been able to test as much though as my urine has been diluted everytime I went to the toilet.

Do you think I missed it or is it coming?

From the tests under the green one, the first two are cd 20 then the last two are today cd 21