16 days late...still negative

Allison

Hey ladies! I'm 16 days late with 2 days of brown spotting 5 days after af should have come and still nothing. Have taken 4 hpts and my doctor ordered a urine and a blood test...all negative. I'm cramping a little, have had a couple days of nausea, headaches, and breasts ache slightly off and on.

Could there still be a chance?