Krystal, best thing is to talk to your DR about the Pap Smear, they will be able to explain the pros and cons and whether it's ok to wait for a bit. Then you can take an informed decision abou it. They will also be able to tell you about what precautions to take re rubella. I would imagine you will need to ppl fairly quickly that you are PG so you don't get any accidental contact with kids with high fevers (ppl will understand and keep their kids away from you if they seem unwell) and you should be fine. It could be that the immunity you have is enough to prevent any problems but there's probably no way of telling at this stage.

Try not to fret about it hun because stress will only make you feel run down. I'm sure it will be ok.

Oh and CONGRATULATIONS on your happy news, and enjoy your pregnancy!
:-)