So....I'm 5 days late for AF, but I ovulated 3 days later than usual, which puts me at 11dpo today. I've been testing since 7dpo

because I'm a POAS addict and my other four pregnancies I got BFPs at 8-10dpo. Never been a late implanter before. So here's the details:

9dpo evening

11dpo SMU
Been getting super super faint lines on FRER 9 and 11 dpo but negative digitals
Possible faint lines (shadows?) within the time limit on $tree tests 8-11 dpo
Negative Accuclear blue dye test 10 dpo
Questionable positive on Target blue dye test 9 dpo but might have been evap
Vaginal achiness, right groin pain, achey lower back/butt
Keep feeling like AF started and then it's just creamy cm
I've been sick with a sore throat/virus this week so it's hard to connect any other physical symptoms
I'm getting SO frustrated! I've never been this late for AF and it's also never taken this long to get a decent line! I keep rechecking my pictures to make sure I was seeing lines on my tests but they're not getting darker at all! Every morning I've gotten up thinking, surely today with FMU it'll be obvious, and it's not!
So....am I headed for a chemical? Ectopic? Could it be a late implanter even though I've never had that happen with my other pregnancies? WTH???
Thanks for reading my vent! Any speculation?