My dd is 7 and has had 3 DPTP shots and that's it. I know she is due for another shot for pertussis and needs her first MMR. She is going to a somewhat alternative school in the fall (larger population of unvaxed kids probably), first school experience. I am also due in September with our 4th baby. The other kids aren't in a school or daycare setting. Should my oldest get any shots between now and then to protect the new baby?