I had my DD#1 vaccinated nearly two weeks ago after a lot of indecision on my part and the poor thing is having a terrible time, although I think part of that has to be put down to the arrival of her little sister. She is very, very tired and grumpy and unfortunately she has got the measles like rash that they say is a common-ish side effect. It doesn't seem to be itchy though and I'm told it will clear up within another week or so. So, nothing permanent that makes me regret having had them done, but just be prepared to maybe have a cranky baby for a little while.