Are you sure that you need to get the vaccines to immigrate?
So many times they outright lie and tell someone that they need vaccines.
They won't inform you of the exemptions.
But once you tell them that you know there are exemptions and want to sign an exemption form, they will reluctantly pull out the form and give it to you.

Schools here tell parents that all the time,
but there is no law here that requires children to be vaccinated to go to school.
They are just hoping that you are ignorant enough to go along with it.

So please, please ask and ask and ask about whether these vaccines are truly required or not.
You should be able to pay for your own blood work at the very least, to show what you are already immune to certain things and skip those shots.

And yes, an adult can become VERY unhealthy after vaccines, especially if you get a lot of them close together.