Hi all, I've been diagnosed with anxiety, went to see my gp at long last, he has prescribed sertiline 50mg once daily. I'm now on day four of taking the meds and feel very strange, it's hard to explain, I feel very nervous and very light headed, shaky and a bit breathless. Is this normal? When you start a new medication, should I ride it out or seek help. I don't know what to do. I'm scared. Thank you in advance.