17 weeks and I can hear the heart beat!

Hi all,
I have a hi-risk pregnancy, and have been deliberating over buying an actual doppler machine, looking to pay 100$ plus, my husband found this app and told me to take a chance, whats 8$ cad versus 100$.
So, while weary that It wouldnt work since it said 20-30 weeks plus... Well guess what IT WORKS!!! And I can tell you I cried!!! As your doctor how best to aim it to her the beat best!!
Its faint but I not only see but hear it. Ps try to hold your breath as it will interrupt the recording :) wish I could share it with you all. I wish you could feel my heart after i heard... And ps I am 200lbs mixed of muscle, chub and baby lol. So if it can work on me it can work on you!!

Giamirza about MyBabysBeat - Fetal heartbeat, v2.92