I think probably the same things that were checked before will be checked again. I think at 34 or 35 weeks you start getting internals and you get tested for Strep B. Not completely sure though, I never made it that far

. But I remember my last appointment at 30ish weeks it was the same as my other appointments and was told that at my next one I would be tested for Strep B.
Hope your appointment goes well
