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I hope you mean to say you are pregnant and there is no cardiac activity.
Mainly , you should get tested for urine HCg
and blood hcg to confirm the pregnancy
done will detect the fetus status.
If there is no cardiac activity of fetus on ultrasound , Doppler can be done.Alternatively , Ultrasound can be repeated in a week and if there is no cardiac activity and see signs of fetal demise , you should go for MTP
Hope I answered your question.If you need more information feel free to mail me.