With kala-azar what else should I be concerned about?

Several things. Many with visceral leishmaniasis do not eat well and lose weight. They are quite susceptible to secondary infections and may develop pneumonia, septicemia and other severe illnesses. They may also become significantly anemic, and hemorrhages also occur.
Your health. Kala-azar is a serious enough infection that you need to take care to have it treated before worrying about other things.