Thanks for all your replies girls. I am amazed when talking to other women that there are so many who feel the way I do. Maybe not always as strongly, perhaps, but it's definitely there.

I have tried talking to DH again about it, but he's said that he's absolutely sure he doesn't want anymore. He knows that I'm struggling with this, and is trying to be sympathetic, but also wants me to know where he firmly stands on this. I feel like I'm banging my head agains the wall sometimes. I know I should accept it and try to move on, instead of trying to think I can change his mind, but I then I keep thinking that I should try everything I can, and not give up.

Very silly of me, I know.