Af is way late ! Help

Lenell
My last AF out of a 37cycle was in October 16-19 supposedly ovulated between Nov 7-11 an since have not had my AF come yet, I am TTC but really wasn't trying in Nov due to so many failed attempts , anyways I'm currently experiencing bloating , backaches , nauseness , on and off breast pain..I also got a bfn on the 24th of Nov, so idk ... Any advice