soo I can completely understand where you are coming from.
We have 5 dc's, (15, 12, 6, 4, 2 ) and had always said one more to make it 6.
Started trying last Septmember, Dh announces in November he;s changed his mind. Had mc at Christmas and I was devastated. I peaded with dh to at least think about it, as we'd always planned. Hi reasons all made sense, money, room, time for us, etc etc but my only reason was that my heart was telling me we're not finished.
January, he got ds, (6) to present me with a bottle of Gaviscon in boots, telling me, "daddy said you'll need this in a few months"
We are now ttc #6. I know he gave it proper thought and agreed because he wanted to, not because I was so upset.
I really hope you can manage to sort it through cos I know it can eat away at you, and some people never get over it.