3 weeks late - negative HPT - negative blood test

koreina
I have a regular cycle, never been more than 3 days early/late.
July was our first cycle TTC #1 & AF was due 8/9 ... i got my blood test  8-26 & it came back negative , my HPT on the 26th was negative as well.
I am starting to go crazy .. i have not been late before & the one time we TTC i happen to be 21 days late ..
has anyone had any experience with this or have any advice ?