I'm a nurse who works in a public hospital, and my work would not vaccinate in the first trimester dispite information about it being safe in PG. There reasoning being if I did MC shortly after getting flu vax, I would never be sure if the flu vax caused MC or not.
I got the flu vax when 14 wk Pg with DS, he is fine, and I plan to get flu vax in next week to cover self and Bub.
I don't know about vax when in TWW. I was exposed to menigococcal when I was in TWW with DS1 and took the "safe" option re: profolactic antibiotic and took the shot in bum over risky oral tablets.