i had no immunity, and im pretty certain i got all my shots and stuff growing up.
The doc told me i couldnt get a shot while pregnant and would have to wait til after i had her, while i was in hossy after i had her they gave me shot.
He told me that when i have another bub, they'll test again and see if im immune, he said its pretty rare but some women arent and never will be immune.
I feel for you i spent my whole pregnancy paranoid about sick kids and then i went and got whooping cough