Vaccines that are recommended in pregnancy include hepatitis A, hepatitis B, inactivated influenza vaccine and Tdap.
Certain other vaccines are sometimes recommended depending on various health requirements of some individuals.
Vaccines should not be used) in pregnancy are mostly the live vaccines like MMR vaccine , live attenuated influenza vaccine (used as nasal spray), varicella vaccine, zoster vaccine, BCG vaccine etc.
Recently another vaccine is making its place in the list of recommended vaccines for pregnant women, the whooping cough vaccine. (link)