He should be fine, but I would just check with the doctor to make sure.
Yet another article came out today proving there is no link between vaccines and autism. Do not believe the scaremongerers. It is far more dangerous for your child and the rest of the population to not be vaccinated. The link was based on bogus research which has been discredited numerous times since then. Also the post stating that the USA is the only country to vaccinate children before the age of 5 is completely false. I am from Europe, and babies are vaccinated there just like they are here, and I'm sure the rest of the world who are luckily enough to be able to afford vaccines. See how many more children die from preventable childhood diseases in the developing world where they cannot afford vaccines for all, and it is very sobering.
You are doing the right thing, don't question yourself.