I Am On Colozapam At Bedtime And Cymbalta 2 Times

I am on Colozapam at bedtime and cymbalta 2 times a day for what The dr.says for anxiety, I did not take Clozapam Thur & Friday,also I had not taken Tha cymbalta for 4 days because of my newly diagnosed congestive heart failure, my feet were so swollen I could not put on shoes,so thats why I did not get to pick up my cymbalta. Well now I am having these jerking movements of arms & legs My Neurologist says now That I am taking meds correctly the jerks should subside. Why am I having these jerking>