We advise anyone feeling depressed to visit a psychiatrist and tell him about the feelings of nausea and depression. Continue to recite ruqyas and make du`a’ (supplication) to Allah to help overcome such feelings and to grant happiness in this worldly life and in the Hereafter. Such person can also repeat the following du`a’s:

Bismillahi alladhee la yadhurru ma`ismihi shay’un fil-ardi wa la fi-s-sama’i wa huwa as-samee`u al-`aleem (In the name of Allah, with His name nothing whatsoever on either earth or heaven can inflict any harm; He is the All-Hearing, All-Knowing).
Hasbiya Allahu la ilaha illahuwa `alayhi tawakkaltu wa huwa rabbu-l-`arshi al-`azheem (Allah is sufficient for me; there is no god but Him; in Him alone I place all my trust; He is the Lord of the Mighty Throne).

Rabbi a`oodhu bika min hamazati ash-shayateeni wa a`oodhu bika an yahdhurooni (My Lord, I seek refuge and protection in You from whisperings of devils, and I seek Your protection against their presence around me).