Brief Answer:
Safe

Detailed Answer:
Hello and welcome to "Ask a Doctor"

I have gone through your query and can certainly understand your concern,

Yes, it is perfectly safe to take duphaston (Dydrogesterone) during pregnancy. This contains the essential hormone progesterone which is necessary for healthy pregnancy. This is prescribed by your doctor when there is a chance for threatened abortion.

You may continue the medication as per the doctors prescription. Meanwhile, I would suggest you to get complete bed rest. Avoid any travel for a while. Avoid climbing stairs.
Also continue to take the regular folic acid, calcium and iron tablets.

Look out for any signs of increased bleeding, lower abdominal pain etc.

I hope this helps,

Please feel free to discuss further,

Regards

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