constantly hungry but can't eat

Oh goddess... my head's going crazy. Been out of it ever since Thursday. Nauseous and dizzy. Thinking it's cause I stopped taking Mirtazapine. I'll try to wait it out now and hope I'll feel better in time. I don't understand what it is with my body that when I don't take my pills I feel nauseous. Like what the fuck!? I feel constantly hungry but can't eat. Even when I eat I still feel like I'm hungry. Ughhhhhhhhhhh!!!!!!!!!!!