If you are sure about the dates, then the progress of the pregnancy
is better ascertained at the repeat scan as it should have correlated with your dates. If fetal heart is noted in the repeat sonogram, you can follow it up to see the progress at serial intervals as suggested by your doctor. Meanwhile take bed rest
, avoid intercourse and all kinds of stress
, take plenty of fresh fruits and vegetables and prenatal vitamins
. Wish you good luck.