While the benefits of vaccination, in the great majority of cases, far outweigh any risk there are exceptions. You history sounds complex with a host of autoimmune diseases. You have also been diagnosed with GBS but the occurrence of a relapse makes me doubt that diagnosis. Relapses in GBS are exceedingly rare and it is possible that you have a relapsing form of CIDP. Unfortunately, you are getting conflicting advice; one medical team recommending vaccination and your GP advising against it. I regret that it is not appropriate for me to comment on an individual case, particularly one so complex. You need to try to get your GP and the medical team managing your pregnancy on to the same page with regard to vaccination advice. Sorry to be of so little help.