5 days late!!!

Courtney • 21. Married to the love of my life. 💜 Noah AuG 2016 💙💙 TTC #2 with PCOS & Testicular Cancer💚💚
I am now five days late with no sign of AF showing up. I've taken multiple tests and none look too promising. 
I don't want to get excited but I usually have a 30 to 35 day cycle and I'm now on cd 40. 
Anyone else not get a positive til a week after their missed period?