Help!!! Cycle day 38/19 dpo

Okay so my average cycle is about 30 days. Currently on day 38, no sign of period, Glow says I’m 6 days late. I spotted a tiiiny bit on the day I was supposed to ovulate which is not typical. Occasional afternoon nausea (starts around 4pm) and headaches, tiny back pains, lots of clear CM, but no real symptoms. I took a test yesterday afternoon- BFN. I know it’s just a waiting thing but does anyone have suggestions/stories similar?