I have six kids as well, if i could physically have more i would but it's getting harder on my body with every pregnancy. But we had said we were done after number 4 but i didn't feel complete and eventually we knew for sure we wanted another, now my husband has always said it's not his place to tell yes or no he will always support me if i want another, but, come to find out after i conceived #5 he didn't want to and it damn near tore our marriage apart, but we climbed back and actually just had#6. My advice to you is talk to your husband don't just ask if you can, start talking about ther baby like it's already there are how he responds to that get a feel for adding another then make your decision!