sissymcbee,
It is very common for fluctuations in fetal hearbeats to occur. The normal rate is between 120-150 beats per minute, but this can vary. It can rise to as much as 200, or drop as low as 100. At this point I would not stress over it, since this is very normal. Typically the heart really isn't monitored until later on in pregnancy, at about 24 weeks or more.
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