Uy, this is really something you need to talk to your OB about agad, ha! I know it's scary to think about, pero they're the best person to check on you and baby right now.
A few of us moms din went through uncertainty with vaccines during pregnancy, at ang best advice talaga is to get proper medical guidance, wag mag-worry lang ng mag-worry. Your doctor will know exactly what to do and what to monitor. You're doing the right thing by asking, and by seeing them soon, okay? Kaya mo yan.