Twin heartbeats?

Emily ❤️ • Married to my best friend ❤️ 5/19/14 - our first baby girl was born now we are due in May with our next bundle of joy!
Any of you mommies able to hear both babies heartbeats with a at home Doppler? At my 8 week US they said I only had one but I was listening to the babies heart the other night and it sounded like horse hoves and way too fast for one baby... And I am POSITIVE it wasn't my heartbeat with it... I am now 16 weeks 3 days.