The purpose of the present invention is to provide a program for expectant mother assistance an expectant mother assistance method and an expectant mother assistance system that enable an expectant mother to clearly experience the presence of the fetus. The program of the present invention causes a computer (1) to execute the following: a number of weeks input display process (S2) in which a screen for inputting the number of weeks of pregnancy is displayed a number of weeks reception process (S3) in which the input of the number of weeks of pregnancy is received a heart sound selection process (S41) in which a heart sound corresponding to the number of weeks of pregnancy that was received is selected from a plurality of pre stored heart sounds and a composite music output process (S51) in which composite music obtained by synthesizing the selected heart sound with music is output.