Worried :(

Valerie
So I got my first BFP on the 6th confirmed with clear blue digi on the 9th.  I had a m/c in early July so I've been a bit obsessive with PoAS just to see its still positive.  But this morning the digi came back negative.  I don't have an appointment until the 25 but now I'm so scared I'm gonna lose it again.  I don't know what to do.  Has this happened to anyone before and still had good results?  I wanna cry and hubby is at work I have no one to talk to.