It sounds as if you are dissociating, to me. Are you under a doctor's care, first of all?
Yeah i go through periods of rather troubling dissociation, particularly so because i'm a university student, sometimes i just zone out and i'd be looking at text i need to study and the words would be like swimming in front of me, just bad focus. I often have to reread sentences, i rarely get the meaning the first time: i had trouble concentrating in lectures before because my head would be at least partially elsewhere. No, i'm not under a doctor's care..you think i should be or something?