question: I m a 34 yes old female in decent health. Currently 31weeks pregnant. I had the Tdap done a year ago for a booster. Now my OBGYN reccomends to get the tdap again a year later.My questions:1- if my baby and I are sharing EVERYTHING including blood and antibodies why would another dose be necessary? 2- what is the overlap period, as in when is too soon to get a second dose? (Especially considering my primary care dr is not wanting to give it to me stating it s good for 4-5 yrsI am a believer in vaccines and plan on getting them for my daughter once born but something about contradicting views between drs is making my gut question whom is right and whom has an ego problem.