This article is from the Childhood Vaccinations FAQ, by Lynn Gazis-Sax email@example.com with numerous contributions by others.
Here's my 2 cents. Hope it's what you're looking for.
We've given all recommended vaccinations so far (15 mos
and 4 years) We did delay certain of Colleen's shots
because she had a very rough neonatal period and we
couldn't see stressing her system more than necessary.
Why did we do this? All these things are a bet. Given
the relative rates of disease, and the seemingly bad
effects of these diseases, and the relatively low risks
of the shots, it seemed a good bet to take the shots.
(And it makes it easier to get into school and day care.)
I did a little reading (Parents, and a few articles my
doctor gave me at my request), but in large part, I
trusted my doctor, who has always answered my questions
to my satisfaction. With the hepatitis B, I also talked
to several other doctors: ob/gyn & pediatric neurologist
in particular, and read some articles on the subject.
Give them tylenol immediately after the DPT shot.
For all shots, leave extra cuddle time in the schedule.
If nursing, try to make an opportunity to nurse the baby
immediately after the shot. Once they are verbal, prepare
them for it (but not too graphically).
Always ask questions about the shots effects and what to
look for. DPT especially; I believe that the first
adverse reaction is supposed to be somewhat mild; while
subsequent ones are more likely to be devastating. I would
not allow a second one if the first one raised a question.