welcome to these boards. they can be pretty slow going most of the time. congratulations on your pregnancy. i'm expecting baby number 2 myself. my daughter has down syndrome and is 16 months.
as far as feeling worried for your next baby, i encourage you to put those thoughts out of your mind until there is a concrete reason to begin preparing for that. you've quite enough to process and work through with carter. that's your son's name, correct?
how are things going? what does his diagnosis mean for your family in the practical sense? how is he?
take good care~