When could you hear your baby’s heartbeat?

Mo

I downloaded an app and I’m 11 weeks 2 days and after a couple weeks of trying I can finally hear one of my babies heart beating!! It gives me so much reassurance! I have twins so I don’t know what one I’m hearing, but I’m so happy!! I did a comparison to mine and it’s definitely not my heartbeat it’s way too fast! ❤️❤️ I did a little math and the rate I picked up is about 140 bpm 🥰