17 dpo and BFNs —what do I do?!

Ka

I’m usually a 29 day cycle and I’m currently 3 days late. I’m a compulsive tester and I’ve taken about 9 frer and now a clear blue digital and rapid results tests. All very clear negatives.

I want to go to a clinic this weekend for a blood test if AF is still a no show. Is that something I can do at a walk-in clinic? Any idea how long you wait for results? I’m sooooo confused and impatient. I just want a BFP or AF, waiting is torture!