shingles question

My grandmother thinks she has shingles, can't get in to see her DR until
tomorrow but has had the rash for ages but now it's worse and blistery and
on her back so she says....My mother cannot remember if I had chicken pox as
a child I had it or german measles but only got 1 or 2 spots....My DD who is
2 has not been vaccinated for it because I went while I was pregnant and
they couldn't do it....
Do I need to worry, I guess if it is confirmed I better go see my DR, not
worried so much about DD but unborn child.
Alissa
DS due June 8