Started 50mg of sertaline yesterday. Have had a banging headache when lying down. Constant shaky feeling in arms and chest and stomach. Slight nausea. And palpatations and also lack of hunger. Also keep going either ice cold or sweating Is this normal?. Just wanted to ask fellow sufferers if they have had any of these. Doctor did say to me i might feel worse before i get better so was just wondering if anyone can put my mind at ease