I cannot stop worrying!

Jennifer
I am 11 weeks 5 days pregnant with twins and I cannot stop worrying that my babies will be born with special needs. No matter if they are or not, these babies are my little miracles and will love them no less. I work with pediatric patients of every type and I see some very sad things and my fears set in.  I don't know if being around this everyday is heightening my fears, but it is starting to consume me and I cannot get it off my mind. Has anyone had these thoughts, are they normal? How do I stop worrying so I can enjoy my pregnancy?