Early signs of pregnancy before the delay can appear already on 10-12 days after the fertilization of the egg, even before the onset of the delay. And the very first sign of pregnancy is the implantation of the embryo into the wall of the uterus. Most women do not feel this moment or do not attach much importance to it.
In fact, it is implantation - this is the most important physiological sign of pregnancy, the very first contact of the mother and child. Up to this point in the woman's body there can be no signs and sensations of pregnancy, as the egg is still in "free swimming".
A sign of implantation of the embryo to the uterus may be a slight bleeding. This occurs if microtraumas of the uterine walls have occurred during the embryo introduction into the uterus. It's not about heavy bleeding - soon it will be only 1-2 drops of blood. Sometimes the amount of blood given out is so small that it just goes unnoticed by a woman.
In addition to excretions when attaching the embryo to the uterus, there are other symptoms. They are more likely to subjective sensations. Some women claim that at the time of embryo attachment some signs of pain and spasm in the lower abdomen were felt.
Doctors believe that such sensations are impossible, since the implantation of the egg is so microscopic that it simply can not be felt physiologically. Probably, this sign has more psychological background, because a woman who dreams of becoming a mother, just lives it, her feelings and sensations are sharpened.
The probability of implantation can be checked by basal temperature. Usually on this day, the graph shows a sharp drop in temperature (from 6 to 10 days after ovulation). Although sometimes such a depression does not occur, and yet pregnancy occurs.