Pregnancy ghost, called pseudocyesis (from the Greek pseudos =false and kyesis=pregnancy), is when a woman has symptoms and signs that are similar with a real pregnancy, and the firm belief that is pregnant, when in reality it is not. There are a lot of cases of women who were convinced that they have an advanced pregnancy, even in months 5-6, and also a swollen abdomen which was appropriate to the size of real pregnancy.
False Pregnancy is a psychological phenomenon.
When a woman wants very much a child this thought can cause a very great mental strength, an unconscious process of determining the nature, to the point to feel really pregnant.
It goes through the symptoms comparable to those of a real pregnancy: to cease menstruation, nausea, painful breasts, vomiting, weight gain, increasing abdominal etc.
Also, fear of being pregnant can attract just a false pregnancy. Under the effect of anxieties, the operation 
can disturbed the hypothalamus, causing ovarian disorders. But due to reliable contraceptive means, nowadays, this type of false pregnancy, practically disappeared.
Very young girls, young women or the elderly, who may not have children and cannot easily accept this, are most prone to have a false pregnancy. False Pregnancy often finds its origins in family problems or behavior problems. Moral support is very important in this context of false pregnancy and if the problem is acute and repeated, therapy may prove to be the best solution in this way and avoid any relapses.
Today, with modern pregnancy tests, may be very fast for a woman to find out that she is not pregnant. In case of a false pregnancy, pregnancy tests are negative, despite signs of pregnancy that she receives, she discovers she is not pregnant. At this point psychological support, especially from partner is needed especially for women who want a child.
Active fetal movements believed that the woman receives in the womb, are, in fact, intestinal peristaltic movements and / or involuntary contractions of abdominal muscles. Changes in the breasts and the secretion of dairy remain relatively unexplained, there is an assumption that was due to the effect of drugs or stress.