Talk to General Physician on Having Mouth Bitterness From Past 5 Day

having mouth bitterness from past 5 day ,my history is that im schizophrenia patient from 7 years and taking treatment for this ,now i change my doctor ,and he has change my medicine which is Aripip 10mg onwards from last one month. but last 5 days Im feeling mouth bitterness . I'm very confused now , i just eat chocolate ice cream too much and then this bitter taste happened please guide me !!