And, if the fetilized egg has rights, is the government obligated to find a womb to protect that egg till birth & then raise the baby to adulthood?
Of course no one is going to prosecute lab techs for murder. No, the government does not have the obligation to "find a womb" for every fertilized egg now in storage.
That doesn't change the fact that each fertilized egg is a human being, and that killing him or her is murder.
It is possible to commit murder without being prosecuted for it. It isn't being prosecuted that makes one a criminal; it's committing the crime that makes one a criminal.