Thanks for your query,
Growth of the fetus is less. you will have to see whether cardiac activity is present or not which can be usually diagnosed by 6 weeks. In your case, it should be present(>6 weeks ). But even if it is absent confirmation is done by repeat ultrasound
after 1 week. If again results are same, then it becomes a case of blighted ovum
which should be aborted.
Hope it helps..