If i frequently get cold sores will my baby be born with the antibodies?

Probably yes: Since IgG antibodies cross the placenta and thus getting into the fetus's blood, you should find its presence even if you don't have cold sores given that practically everyone has been infected with the herpes simplex virus I.

Yes...: The Herpes virus is a localized infection of the mucocutaneous tissues (mouth or genital) and does not pass through the placenta to the fetus. The fetus is at risk if coming in to contact with the virus while passing through the birth canal or if being kissed while sore is present on the lips. Antibodies are passed to the fetus to help protect the child during birth.

Temporarily: Your baby will get a collection of the IgG antibodies your body has on hand up to the time of birth.This would include those for any cold sores and other infections.However, these are temporary.They are "living" entities that tend to disappear within 3-4 months when babies ability to make antibodies becomes more active.