It is an incredibly difficult and personal decision to choose to continue to have biological children (without fertility + pgd help) when knowing you are both carriers. This is a sticky "hot" topic and people can get very intense about this issue.
"Risking" it means that if the odds don't go your way, you wind up not only with a child who could potentially be very sickly and will certainly deal with treatments and hospital stays galore.... but you have the guilt of KNOWING that you knew and didn't do anything about it. I couldn't live with that guilt. I feel guilty enough that I gave this disease to my child -- guilty that having two boys wasn't enough, that I really wanted one more.
Ultimately, no one can make the decision, but you and your spouse. Make it wisely and be well informed.