I don't know what to think.

Nik • Together 12yrs, married 4 years, Happily enjoying our baby girl!
So I'm 3 days late (I'm never that late) I feel more sensitive stomach wise in the mornings, and ive been more hungry than ever, I tested and got a BFN I made sure it was the first morning urine and I limited my fluid to make sure it was concentrated. I dont know if I should wait and test again and how long should I wait?