I tested yesterday as I 'felt' pg, I am bf my 9 mo and have not had a period since he was born. It was neg. I tested again today and it read negative again. I read it straightaway. I have just come home and went to throw the test away and it now says positive. (It is a Boots one where there is a + or - in the window) I fished out the one from the other day to see if it had changed but this one still read negative. Is it possible that soemthing has just happened to the test? Or does a positive mean a positive?