Georgette -- if you can't handle tomatoes, you can always eliminate them (the flavor wont be quite the same, but the soup/stew is still very flavorful). You could try adding potatoes, or some other soluble staple if you wanted instead....
If you decide to make it let me know how it turns out! I just made a batch yesterday (all this talk put in me in the mood for some Plus its rainy and cold here, so it warmed me up. Mmmm.