can someone tell me about false negatives?

[peacelily]

Using a normal preg test do you HAVE to wait until af due date or would pcg show up before then?

Also how accurate are the "1st response" ones? due Af next week did -ve test this am, did I try too soon?

hoping against hope tbh.....

bump

Do another one in a couple of days. It all depends on when you ovulate I should imagine.