Hi, congratulations with your son!
I know exactly how you are feeling! I had terrible post adoption blues, cried the whole time, isolated myself from other people, ect! I think what makes the adoption situation more complicated is that we can easily feel isolated, because people closest to us don't know the feelings that we are going through! What I got to know over the last 7 yr is that the feeling that we as A/P feel is real and 'normal', it's often not related to adoption....With my first son I often interpreted my own feelings as related or caused by the adoption, or any difficult behavior he had as being related to adoption, but then my 2nd son came along, totally different personality, no hastles and I realized that so many things that I blamed myself for, thinking that it would have been different if it wasn't an adoption issue, is actually just normal development issues, normal emotions, and just that. Don't read to much in to many things...and relax, don't expect so much from yourself, your baby and your situation....Allow yourself to be angry, regretting the situation at times, ect. I'm sure you have so many love to give...and that's all your little one needs!
Me as an adoptive parent sometimes feel that I need to be so greatfull in the eyes of other people to have a baby that there is no space for me to also feel angry or frustrated at my children....We are all just 'normal' parents with 'normal' children!
Good luck, it does get better, when that little one starts recognizing you and kissing you, most of your fears will just settle down!