If you've never vaccinated then don't worry about it, I would however make sure that you dip the cords in Gentle Iodine for prevention against navel ill.
And as a precaution against tetanus if there shoulds be any bucklings that you would have castrated to give the tetanus antitoxin.
Remember that not everyone practices the same herd management and if not vaccinating works for you, thats great, you are not alone in that choice as there are others who don't also.
