Once you see heartbeat... your in the clear?

blonddnyc

My m/w told me that once we saw the heartbeat, the chance of miscarriage is now down to 3%. She also said shes no longer concerned about my hcg levels or low progesterone (I put a call into her yesterday asking if I should be taking supplements for it.. still waiting to hear back) I understand the viewpoint of not interfering with nature, and maybe im just a low horomone person, but we saw the heartbeat and the baby measured exactly in line with my dates - so they said theres nothing to worry about now... but of course im still worrying. Is it true that once you see the heartbeat your pretty much in the clear?