Anxiety n depression. A psychotherapist?

Hello doctor I came to know about my depression in January n since then i was on medication till mid August, initially i thought after my medication started that i'll be normal the way i was earlier bt by the march i started feeling same depressed feelings. I told my doctor that I feel same as before he only changed quantities of medicines n except my improved energy levels nothing improved . Medications course is finished last month bt i m not okay still i feel zero interest in anything, zero concentration, over sleepy, over eating, over thinking, can't focus, zero motivation, i feel everything is waste, i feel crying, i feel empty, i don't enjoy anything in this world . Now i don't know what should i do? I have visited a psychiatrist now should I visit a psychotherapist? Bt after going through the treatment the treatment for 8 months i feel nothing can happen now i cant be treated. Please help me if you can. This thing is eating me from inside.