Axl: kind of mad at first and really stressed. takes his anger out on you at first but after he's super helpful and supportive. the whole band helps you out too, (he makes them). treats you like royalty throughout your pregnancy and caters to your every need. he basically becomes your loyal servant.
Slash: not overly happy about it but he doesn't want to say anything. doesn't really find it a big deal until you have the baby and then he's obsessed with it. it's a surreal thing for slash but it's love at first sight for him, the minute you have your first, he's already planning another.
Duff: stressed is the only word to describe duff when he first finds out. once he starts picturing a family he gets really excited about it and will not shut up about being a dad to his band mates. they're all fed up with baby talk but he always forces them to look at the ultra sound photos.
Steven: happy although he doesn't feel prepared at all and it came as a huge shock to him. supportive though and somewhat excited. adores seeing you pregnant.
Izzy: unhappy and he blames you for it which leads to a heated argument, also says some insensitive things towards you AND the baby but after the band talks some sense into him he apologises. eventually, he falls in love with your pregnancy and is grateful for the kid.