Although I don't know you via these boards, I have read your story and my heart breaks for you and goes out to you. I am so sorry for your loss - so very sorry.
I had been thinking of you over the past few days as a friend of mine just lost her third baby, a boy, (*she has a son and daughter already) after suffereing from placenta previa at which they put her on bedrest and told her all would be fine and planned a c-section (for early december) and then one day she suddenly felt no movement, that lead to the ultrasound showing the baby had passed away. Then of course she had to have the baby as you've been through, and they were able to keep the baby all day and then the service was just yesterday. I didn't make it to the service, as they had a short viewing and then the casket was closed etc., as they finished the service, but I just thought I'd do more harm than good being there - as I know I'd just be a very emotional wreck and I sort of felt this should be a personal, immediate family sort of thing.
I can't begin to think of the hurt and emotions that you go through, as in her case - she has 2 sis-in-laws that are each pregnant, one is due in just a few weeks, the other due early next year. I know you must go through 1,000 different feelings, wanting to die to be with the baby (she has already said she wants to shoot herself), hating (well not really, but you know) the other sister in laws for being pregnant - God only knows what else - and even though you know you may be 'wrong' in feeling those ways, we are only human and can't stop how we feel at times - but I think it's important to acknowledge what you feel, and not let it get the better of you and then try and remember to live life for your children you have and hold so precious - all that being easier said than done I'm so very sure!
Please know that we are all hear to "listen" as you vent! And hopefully no one will be judgemental as to what you are feeling or what you are saying.
I have two boys, and honestly, I have a husband that flat out doesn't want any more children! He thinks they are too demanding, too much work, and in the long run - will be VERY expensive (i.e., college, vacations etc). This really saddens me as that I don't want a zillion - I simply want "4" and I don't think that's an unreasonable number. You are truly a lucky woman to have 5 children with you and 1 in heaven, and I'm sure you'll be able to have more since you must have a husband who is on the same page with you!!!
Please know my thoughts are with you!!!!!