i started with i think panic attacks every day for the past 6 weeks sometimes several times a day been to gp 6 times who did not really diagnose as isuggested if this could be my problem amd muzzy headed dizzy sweating no palpatations or problems breathing sometimes having numbness in arms. put on prozac 20mg now on 21st day since last thursday funny feelings now in the morning yesterday did not have any at all went out for the first time shopping in 6 weeks thought yeah cracked it felt better but not 100%. today woke up feeling dreadful dizzy and muzzy headed all the time no other synptoms wondering is this the prozac how long does it take to work and if the side effects last for this long i need to go back to work but cannot at the moment cause in the morning feeel dreadful now even thinking that there really is something wrong as my mum died 3yrs ago with a brain tumour starting with funny dizzy dos but was not diagnosed until too late. i rationally think this is not the same problem as i have bouts of feeling better hoping it is anxiety but am fed up now seem to be taking one step forward three back is this the result of prozac seem more groggy than usual. please someone advisse me thanks.