A phantom for simulating fetal heartbeat. The phantom includes a housing and a fetal heartbeat simulator. The housing has an exterior shaped like a female human pelvic region and surrounds an interior. The fetal heartbeat simulator includes a tube having a proximal end and a distal end, the distal end being positioned within the interior of the housing. The tube is filled with a first fluid having a first compressibility. A second fluid, having a compressibility that is greater than the compressibility of the first fluid, is disposed at the distal end of the tube. A pressure mechanism operably coupled to the proximal end of the tube is configured to selectively compress and decompress the first and second fluids.