Hi,
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.