This question will be answered with surety by future only.
Believe in your doctor
Don't get worried
Any thing which can happened, have its own probability. But in this case high probability is that on next scan things will be better, is good. If at 6 weeks scan ( it also depends over route like from abdomen or TVS) you are having fetal pole of near same gestation. As there is slight bleeding follow advice of your doctor and
Take all medications
Next Steps
don't get worried. follow advice of your doctor. Best of luck.