Could I be 'developing' Obsessive Compulsive Disorder?

Some of these things are really very normal and if people were honest they would admit to doing most of them. If you are really worried like you say that you are you might want to consult your doctor. They will help with the anxiety problem and they might be able to give you a diagnosis. Sometimes having an answer helps people adjust to life. You might want to look into having some cognitive behavioural therapy this helped me enormously.