My elisa anti rubella igg negative(0.13 ul/ml) and elisa anti rubella igm positive(>400). is it safe to pregnancy. ?

No: Igm rubella indicates recent exposure and body response to it. It does not refer immunity. Hence baby at risk for congenital rubella.

Need more proof?: The IgM constitutes sufficient proof of new Rubella infection by CDC guidelines. All lab tests have a small risk of error. IgM is the first immune response to infection, then followed by a rise of IgG which confers life-long immunity, while the IgM wanes to neg. Since IgG is negative, your infection must be early. You can confirm it in 2 ways-- by a PCR for rubella virus DNA, or a repeat IgG,