We've been at it for a year and four months, is there any kind of cris…

We've been at it for a year and four months, is there any kind of crisis around that age? The son has been very calm, now he cries often, yells, unhappy about something? My ears hurt from crying and nerves barely hold up. He can't get something or something else all crying? I thought maybe because of cartoons, sometimes I put on to cook dinner or just go out...