I don't know if this will help anyone, but you really don't know you're out until AF shows!
All cycle I've had zero symptoms. No boob sensitivity at all, no increase in size, no cramps until the usual quite strong painful ones around AF time that kept making me run to check I hadn't started.
This is my 6th pregnancy and with 5/6 I've had noticeable symptoms in the tww. I was also recently in hospital for PCOS on what would have been around 12dpo and they did a negative pregnancy test and a pelvic scan where they didn't mention anything.
Realised I was a few days late this morning so picked up a test fully expecting it to be negative. But it was a strong positive!! Honestly so shocked.
Still trying to get my head around it tbh. But yep, you honestly never know.