MissM all is correct about not being able to get vax while PG and you're supposed to wait 3 months after to TTC. My immunity was low also and after 2 x MC I decided to take a break to let my body recover, have the VAX booster then wait 3 months and try again. When I was tested at the start of this PG my immunity was still at the same level. My GP said some people just don't get a higher immunity level from them. If I hadn't have been happy to give my body a rest to recover I think I would have been more annoyed that my immunity level didn't change.

Have a great PG..