Hi, I m 17 now, and after so long I just want to ask someone if I might have OCD . I tend to do things like tap my nose, only use one mug; I literally think about things repeatedly until there s no more to think about; I m always checking if my cat is still breathing; I cannot breath if someone sneezes; I am very particular about my hands, and so on. Maybe this is OCD, or something else, I ve never asked. I have tendancies of depression and anxiety also.