negative tests and late

I'm not new to pregnancy. I've been pregnant 7 times resulting in 5 living children. With each of them I always got a positive at 11dpo. I'm now 14dpo and should have started my period yesterday. My tests are all negative. Is it possible to still get a positive this month?  We just miscarried in march and my cycles are still a little weird. Nothing totaly out of the ordinary but this cycle started 9 days early.