Phantom Pregnancy
There is a medical condition called phantom pregnancy where a woman’s body believes it is pregnant but isn’t. (This same thing happens to those who lose limbs too, at times. It becomes such a problem for people, that they will complain of pains that could not exist. However, this condition is incredibly rare. (Phantom pregnancy or pseudocyesis is a rare condition nowadays, affecting only about 6 in 22,000 pregnant women in the US. However, its incidence may be higher in communities which put a higher priority on fertility in women. Phantom pregnancy is different from a delusion of pregnancy.)