8 Days late, BFN! When to see a doc??

Brittani

Y’all I’m going crazy. I had mild spotting at 10dop and I thought for sure it was implantation bleeding. I know I ovulated as I used OPKs this month. But, here I am 8 Days late for AF and BFN. I have had a regular cycle since being off the pill since November! I have never been this late! How long should I wait to go see a doctor about this??