Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.
According to your description the possibilities are :
-Usually fetal heart beat can be seen by 7 weeks of
gestational age.
So, if previously heart beat is seen and missing now, there is possibility of
missed abortion.
-If heart beat not seen till now, there is possibility of
blighted ovum, in which yolk sac only develop with absent
fetal pole.
In both the cases, the possibility of
pregnancy is very less and you may need to terminate the pregnancy. Medical termination is possible when the decision is taken early.
Please discuss with your doctor and proceed according to her advice.
Hope I have answered your query, I will be happy to answer any follow-up questions.
Take care.