Thanks for your query.
There is no medicine to cure Rubella Ig G nor is any cure required.
Ig G indictes past infection or immunity against rubella.
Ig M indicates active infectin.
If you have taken the complete course of Rovamycin
( both of you ) then there is no cause for worry.
You can try to conceive a baby now.
there could be other causes of miscarriages such as :
3. Abnormalities in size and shape of uterus
4. Other infections.
Please consult a high risk pregnancy
specialist for a proper workup
Take regular folic acid