I have mental health and have recently developed a new symptom which makes me swear!?

i dont think it is tourettes because if i really try i can control it, but rather everytime i go for a walk i talk to myself in the street and say'f*ck sh*t b******cks w*nker' and ill repeat it until the urge fades. it feels like a different persona taking over the real me. it stems from the fear of outside, and the rest of the mental illness i am suffering right now. and i talk to myself in my room as if i have been overtaken by the dvil, and i am talking to it whilst i look for things saying 'where the f'*ck have you put it? tell me, why are you doing this to me, you are so nasty, all you want for me is hell. and then a different side takes over and looks in the mirror and struggles to pull myself together from turmoil and will say'look, YOU camilla, YOU are clever, you know you are, dont let it hurt you. just remember you are mentally ill, and nothing you do is entirely your fault. you cant help your behaviour' then the devil will take over. and i make up songs in my head about how much i hate mental health and how it overtakes my life.