Hey moms 👋🏾 well I just found out I’m expecting my second child yesterday 😌 with my first pregnancy…

Hey moms 👋🏾 well I just found out I’m expecting my second child yesterday 😌 with my first pregnancy they told me it looked like I would be having twins. A couple weeks later at another ultrasound they only could find one heartbeat unfortunately. But my question is what is the earliest you can find out if your having twins ?