Are you trying for a baby? If you are, one sometimes gets so caught up trying to fall pregnant that one becomes almost "over-watchful" because you are so longing to be pregnant. The hardest but best thing to do is to try to relax and if you are pregnant, you will probably get some signs such as frequent urination, tender breasts and tiredness in the early stages. Try not to think of pregnancy unless you are over 3 days late (minimum) or you could drive yourself insane with watching and hoping and longing only to get disappointed all over again. It can, however, be possible to have a pregnancy with no early symptoms, but this is unusual and usually falls into a kind of denial when someone actually does not want a baby, or thinks they have undergone the menopause.