Missed period or could I️t be switching

Brittany

I️ need help my last period was November 8 I️ was pose to come on December 9 but nothing and now it’s December 26 and still nothing I️ took a test I️t came back negative I️ took I️t like 5 days after missed period what should I️ do could I️ b pregnant a little tired and little cramps here and there tho