My suggestion:
Look at The Australian Vaccination Network website:
Avn.org. I subscribe to it and I get a copy of their magazine called Living Wisdom. They also sell books and packs. You could speak to someone there. The editor is Meryl Dorey and she could give you a run down over the phone. It's worth it.
There was an article in the last edition of Living Wisdom - an interview with Dr Mark Randall, a whistleblower who worked on developing one of the vaccinations. His article summarised a lot of the logic behind not vaccinating. Might be worth buying a copy just to read it. Unfortunately as vaccinations haven't been scientifically tested, long term, etc and adverse reactions appropriately collected, a lot of the evidence against vaccinating is anecdotal. On the flip side, the testing of vaccinations is also flawed and not indicative of a thorough system. It is scientifically flawed.
Vaccinating is not 100% effective and not 100% safe.
As Dr Randall says, what is vital is your general health. In his words, the immune system is: "The entire body, really. Plus the mind. It's all immune system, you might say. That is why you can have, in the middle of an epidemic, those indiviuals who remain healthy."
Arm yourself with some facts and get help from the AVN. Educate yourself on the possible negative effects before you give the shot. There can be negative consequences if you do or don't vaccinate. If you do vaccinate you know you are injecting harmful substances into your child, directly into the blood stream, not passing through the body's immune system. If you don't vaccinate and something happens, then you would have made an informed choice and therefore you will accept the basis of the choice you made.
As Dr Randall says "people need information so that they can choose well. It's one thing to say choice is good. But if the atmosphere is full of lies, how can you choose?"