I would wait for about a week then take another test.. I took the ept certainty and it simply said pregnant or not pregnant and I took 3 all one after the other and all 3 came up pregnant. I peed on the stick, it worked fine for me.
"after ovulation, your cervix will drop lower in your vagina and feel firm, like the tip of your nose. During pregnancy, the cervix will rise a bit and become softer, but the timing of this happening will vary from woman to woman. For some, this will happen shortly before their period is due, but for other, this will not happen until quite a while after their pregnancy has been confirmed."