One more baby

I don’t know how to word this other than stating the simple fact. I want another baby. I’ve wanted 4-6 kids my entire life. After my first I realized that 4 would fit my lifestyle better. My hubs and I have 2 boys and a girl. He knows I’ve always wanted 4, but when I brought it up recently he looked at me like I had 10 heads. We got our girl why we aren’t having any more.... ummmm ..... I didn’t care what we had and I can’t imagine my life without my boys or girl. But I still feel like I’m not done. My heart and soul need one more to feel complete. I honestly feel like you k ow when you are done... I just don’t feel that yet. So my heart is heavy. If I would’ve known this was going to be my last I would’ve done things differently. I always assumed I’d have one more since we’ve always talked about having 4. I’m just so sad and at a loss.....not sure what to do from here on out. Any tips would be greatly appreciated