forget what the in-laws say. this is YOUR family. it is YOU that makes the decision. there is not a valid reason for you to give your pets away right now. if your child develops an allergy, then you can consider it.
when i was in the hospital, i even had nurses asking what i was going to do about the dogs. i said, "nothing, they are a part of the family too!"
now my 2 year old LOVES to help his daddy walk the dogs and take care of them. it is very good to have animals around. it helps to teach them responsibility.
good luck!