Well, the title is kind of self-explanatory. Recorded on april 2018, this is the sound of a 18 weeks old fetus heartbeat, beating at 150bpm (approx). Or that's what they told us at the clinic :).
I march 2007, i uploaded an isolated chunk of my unborn child's heartbeat from a doppler check during a doctor's visit (http://freesound. Iua. Upf. Edu/samplesviewsingle. Php?id=31785). I had a request to upload the entire recording that also includes my wife's heartbeat mixed with my child's. Here it is!.