Why is this so hard

AF was due 6-18. I bled for ONE freaking day on 6-23. I’ve taken so many tests all with BFN. Yesterday I had sensitive and sore nipples, I’ve been more tired than ever, etc. I took a test this afternoon and again, BFN. Should I go get a blood test or wait to see if AF shows next month? This has never happened so I’m honestly confused.