When's the earliest time you can hear baby's heartbeat on a Doppler?

[Rhi_Rhi1]

I'm very nearly 10 weeks so I might invest. The hope is that it will put my mind at ease until The scan. Fingers crossed it doesn't just make me more paranoid

 

[cscbeth8421]

Sonoline b (its like $35) and i found both my babies at 8 weeks and a couple days.