I took mr vaccine but before passing 3 month if i conceive what will be the effect?

Unlikely to be a pbm: Many physicians prefer to avoid this vaccine prior to, or during the first 3 months of pregnancy out of concern there could be problems.However, of cases where this has happened, there have been no significant issues reported.

Should have antibody: If you are going to form antibodies as a response to this vaccine you will likely have formed enough to prevent overt infection during your pregnancy. Good luck.