Oh Kery..Please you are not silly, not at all. Although I can identify with why you asked that question (because you have already been blessed with a child, as have I) it still does not stop the hurt...believe me. I have a child from donor sperm who is now only 2 and a half. But some of my darkest days have been in the 5 IVF attempts for a sibling after her. I too wondered if I was being silly for this sadness realizing there were many others struggling to conceive just one child. Since then, mainly through the support I received from this group, I realized that everybody's situation is different and a loss is a loss - whether its the loss of a dream for a child with your husband, a loss over a miscarriage, loss of a dream for a sibling or a loss of being able to conceive naturally without medical intervention.
I do have to say though please do not give up hope. Your husband may need time to process this a little more. Believe it or not at first I was the one to say "No Way" and I meant it. Then we started talking adoption and do you want to hear something stupid? ......The way I got over the genetic connection loss was my husband saying "You know how much you love the dogs (our first two children

) well you are not genetically connected to them are you...but you still feel the utmost love and care for them, right?" Well he was right, as silly as that sounded that was my breakthrough. So not only did I accept the idea of adoption but then became excited over it. Only then did I realize, wait a minute if I can accept and love a baby with no genetic connection at all, then I can certainly love a baby with part genetics. Furthermore, I will have control of pre-natal care, nutrition, care as a newborn, abilility to select and screen the donor etc. and for us it made financial sense too as our treatments were covered by insurance. So basically, it just made the best sense all around, however, it took a while to get there. So please do not lose hope, it may just take some time to absorb.
By the way I am very sorry to hear about the outcome of your isci and ivf cycle. It must be very difficult on you both. However, please keep talking about it though, it does help. You have every right to feel what you are feeling, please do not be hard on yourself as you've already gone through enough.