Firstly, if your wife had an abortion, the same would be shown in the sonogram-an empty uterus
. If it is not so, then the pregnancy
is continuing. I advice you to get the sonogram for an incomplete abortion
or otherwise. Serum hCG
levels take time to disappear after an abortion, so, the pregnancy test may remain positive for sometime after an abortion. Please get further suggestions from your doctor. Good luck.