It's completely up to you dear . Definitely do some good research before considering.
I'm not going to be crazy about my family getting the vaccine. I asked them all if they could but if not I won't worry too much. It can be fatal to a newborn before their two month vaccines.
Not necessary but if the baby were to catch it, it could cause death
I didnt get it with my first or with this one...so I don't think it is...but it's up to you.
A child is most likely to get pertussis when vaccinated. Look up on the CDC and it says something about that