Do I still have a chance

Brittany • Mommy to a beautiful boy 6/8/17, Pregnant with baby girl due 9/11/19
So today is either 10 or 11 dpo and I took a test and got a negative. But I have been cramping the last few days, and I just feel off.  Could I still have a chance at getting a bfn in a few days, or do you think I am having just bad Pms? Glow says my period is due Monday.