Oh sweetie, I am so sorry.
It goes without saying that I can understand some of what you are feeling, since we also lost our daughter Josie just over a year ago (October 10th, 2008) and I know the place you're in at the moment: very surreal and strange as well as heartbreakingly sad.
Please know two things: one, that I am thinking of you so very hard and sending all the love in the world your way; and two, that this sad time will not be forever. There is a light at the end of the tunnel, so to speak - this hurt in your heart will not cripple you.
Joseph is a gorgeous name - Joseph will always be your son; you're a mama, and your husband is a daddy, and always will be. You will never forget anything about him - every sensation; every touch and look and feeling will be with you as a precious memory for the rest of your life. I worried about forgetting, but you never do. Did they have chance to take some pictures? If so, please don'e be shy about sharing them: you deserve to be proud of the awesome little life you created and I know we would all love to see his handsome little face.
*HUGE hugs* - please, PM or email me if you ever want to. Also, the PAL boards are just fantastically supportive for everyone - both later and earlier losses.
Again, I am so sorry mama - I really wish there could be no more of this, but there is, every day. All we can do is love and support one another. XXXXXXXX