I was supposed to be taking a nap before work ( I work til 2am tonight) but this came and I just had to try it! I am 12 w 3 d. It took a good 20 minutes since I've never use one and only saw a few YouTube videos but I found our baby's heartbeat! It's amazing! I also heard a few blood vessels and what I think was the placenta. I swear our little nugget was moving around cos I would find it and freeze and then t would move a little to the left or the right. I'm so glad I bought this! Now to try not to use it evey day lol but I'm a worrier so this will definitely give me peace of mind after our missed miscarriage in January.