Well, I guess you can't argue with the 'Pregnant' on the CBD! 1-2 weeks apparently, which makes sense given that I'm fairly sure I implanted last Monday now.
Here's the stats, in case they're useful to anyone, or anyone is particularly interested.
I've been temperature checking each morning and I'm pretty sure I ovulated on approximately day 14. DTD a few days before, during and after to make sure the whole period was covered.
Had what can only be described as period pains on 9 days after ovulation, that's exactly what they felt like. Presumably that must have been the moment of implantation. They lasted for most of the day, but there was no bleeding.
Since then, I've had no further symptoms and I still have nothing at the moment! So I guess early symptoms aren't necessary in the slightest. Just to give some hope to people who haven't felt a thing during their 2ww.
Anyway... The test yesterday was 14 dpo and I got a faint line. Then the BFP on the CBD was 15 dpo - on the day AF is due.
I hope that might be helpful to someone!