when does the fetus heart start to pump
When does the heart start beating in a fetus? 22 Days. 23 days after conception according to my Anatomy and Physiology Honors professor who is also an Ob/Gyn, in a closed circulatory system. However, you will not be ablâ¦e to hear the fetus' heartbeat until approximately 6 weeks, the latter part of the first trimester.