Has anyone had a pregnancy test turn out negatove and then positive?

Allie
I have a question for you ladies has anyone taken a pregnancy test and it came out negative then a week later it turn positive I took one on the day my period was due last Wednesday and it was negative and then I took one yesterday and it was negative. AF has still not shown up and I'm wondering if I wait and AF doesn't come by Sunday if I take another it will be positive. When I was pregnant last time before I miscarried I took a pregnancy test and it was negative about a week later I took another one and it was positive and I was about 6 weeks. I am so hoping this will happen I want my rainbow baby. I just hate this waiting game and I hate all these BFN ;( please comment and share stories.