Thanks for your query,
I can understand your concern. Gestone
which helps in sustaining pregnancy
. Other drugs are also helpful in that. Truely speaking these drugs and any other drugs cant help much in your case. Unless we get the heart beat , pregnancy is not considered viable.But by a single scan usually conclusion is not taken. Repeat scan is done for confirmation. You should avoid spicy food, excess tea, coffee, smoking, alcohol etc, Mental relaxation is also very important in your case.
Best of luck..