Yes, it is generally recommended to delay pregnancy until your wife completes her tuberculosis treatment. While standard TB medications (like isoniazid and rifampicin) are safe during pregnancy, completing her therapy first ensures she is fully recovered and her body is strong enough. First, her doctor must determine if she has active or latent TB. If she is already pregnant or becomes pregnant, please do not panic; TB can be successfully and safely treated during pregnancy under close medical supervision. Discuss your family planning goals with her physician to ensure a safe and healthy path forward.