feeling sad

So I found out today that I will require a hysterectomy due to damage from two previous vaginal deliveries. We have two beautiful children and I feel incredibly blessed to be there mama and we have said since our second was born that we would stop at two children. 1. Because financially adding a third would be way too hard and 2. It feels right to stop. I think I'm feeling sad because it feels so out of my control now and so real that we really WILL NOT be having any more children. I don't know how I'm supposed to feel I guess.