Need some opinions 🙈

I had my first ultrasound yesterday. This will be baby #2 and things with the doctor's office have just been hectic.

My question is, what's the earliest you guys have found the heart beat on a doppler at home?

I found it for the first time, without a doubt on May 30 (heart rate was around 150, so positive it wasn't just mine). According to their calculations, I'm 7 weeks 5 days and I just feel like that would of been too early to find a distinct heart beat and to still be able to find it with no trouble now. 🤔