Is it possible to take a pregnant test and get a negative seven days before cycle is due and get a positive later?

Pregnancy Testing: Testing before a fetus and mother are sharing chemical and blood connections should produce a negative test. This is not that there was a problem this represents you wasting money on a test that would be invalid and naturally negative. As the new fetus grows and begins to share chemical and blood with the mother then a test will turn positive. You are pregnant.