all these things happening...and a bfn

Pretty normal cycle. Haven't been temping but been using digital opk. Bd'd all through fertile window. Had some spotting last week that lasted on and off 2-3 days. Very very very light, light pink and little brown. I. Never. Spot. Ever. And I'm never early. Af was due Saturday (11/26). Tested and got Bfn Saturday, yesterday, and today. Have had a little bit of nausea but I'm halfway convinced it's mind over matter. No af yet. No symptoms of af. Slowly going crazy. Just wanted to get it out!!  Currently 16 dpo. 😬😬😬