Confused please HELP!

Cassandra
My periods have been very consistent through the past year ever since I got my implanon taken out. I am currently 5 days late! Moody as can be. Nauseas here and there & cramping but all I'm getting is BFN 😩 I'm so confused are these symptoms all in my head am I losing my mind?! Could I be pregnant even though the test are negative ?