Luka's 4 month 'Well Baby' check-up

Currently he weighs 15 lbs 16 ounces and his height is 26.25".  His doctor says he is perfect (we knew that!)  I'm delaying further vaccinations (he had all of his 2-month old shots) until I do some more research on which I can delay until he is a little older, which I don't believe he needs at all, and which he should receive as an infant.  I feel that doctors and drug administrations are making our choices for us and I want to be a little more educated and confidant in what goes on with Luka.  Currently there are all these debates about why Autism, chronic allergies, asthma, ADHD, diabetes, are growing at such fast rates.  And some of the ingredients in these vac's are just not right...  monkey tissues, bovine serum, aluminum, formaldehyde to name a few.  Who knows what future research is going to say about all this.  Anyway, our main concern is Luka's overall health.  Of course we don't want him to catch the Whooping cough, but I need to be sure that these vaccines will be more beneficial than their possible side effects and risks.