In practical terms - you should have nothing to fear, just get it done.
All this mess has occured due to bad science, media hype and public missunderstanding.
A study was done and published that was picked up by the media and which scared the general public .... it was later shown to be false, but they way the media have handled it ... and the way the public missunderstand science and scientists, its become a sort of hysteria.
Several years ago, a study was done into the effects of voilent TV shows on children.
The person(s) doing the study went to juvinille detention centres and observed what violent and trouble children watched on telly, and it was shown that they watched a large amount of violent programs.
They therefore published a paper that was reported on the BBC news showing the link between violent children and violent programs.
.... however, what they should have done is checked what ALL children watched ... which someone did afterwards .... and found that the violent children watched exactly the same amount of violent TV as children that had no problems at all.
The same sort of thing has happened with the MMR vaccine scares.
Like anything else, if we are logical and scientific about something, we can't say anythign is 100% 'safe' - there are risks with ALL medicines and procedures. They are usually very minimal. When the scientists were asked by the media and parents ... is the MMR jab 100% safe, they answered honestly and said no, but its a very minimal risk ..... all the media and parents heard was the ' no ' and decided that it backed up the earlier claims and their fears.
In all the studies done and examined thoroughly, there has been NO link found with MMR and Autism.
I can understand your worries as a parent wanting to protect your child to the ebst of your abilities - but from everything I have read and studying on the subject, I don't think you should worry.