QUOTE:
Moreover, about one-third to one-quarter of pregnancies implant for a short time, then fail. "That leads to a transient rise in hCG, which can extend for as long as two days after the day of the missed menstrual period."

Consumer Reports advises, "If you're comfortable waiting, a sensitive test taken a week after your period is overdue will almost certainly give you accurate results. If you elect to take the test as early as the day after you've missed your period, remember that a negative result isn't 100 percent certain. And a positive result may mean either a viable pregnancy or a pregnancy destined to end shortly after it began. With either of those results, you should plan on testing again a week later, just to be sure."

Now i am worried that I have told my family to early - I am 12 DPO and recieved a positive 2 days ago...my cervix has risen up and become mushy..... Should i be scared...