Hi, welcome to HCM I am Dr Das
First of all, you must know what is the problem with rubella
Ig M. It indicates an acute infection with rubella. Increased level indicates remission. When the disease will be completely cured, then the level should minimum.
If there is an acute rubella infection present pregnancy
, there is increasedchance congenital anomaly. So, in my opinion former 6 month, for complete remission. Then try for child.