Fetal Doppler

A few weeks ago I rented one of those fetal dopplers from Stork Radio.  I started feeling movement at 13 weeks, but it wasn't consistent.  What a great thing to feel movement so early, but then when it is not consistent you can't depend on it to know the babies are ok.  Funny enough since I got the doppler I don't use it that often.  I always feel them move so I don't even really need it, but just having it in my house is reassuring.  Silly, I know.