Hello. At me a delay of 14 days. Before a menses were regular, to...

[Marina]

Hello. At me a delay of 14 days. Before a menses were regular, as on hours. Tests are negative. They can be mistaken at such long delay? If I am not pregnant, than it can be caused or called? THANKS

[Malanova T.B.]

1. Tests can be mistaken. 2. It is necessary sdelvat US for specification of a situation.