Everybody drops things. Most people don't count how many times it happens. I would stop thinking about it (to the extent you can) and then ask yourself at the end of the week whether dropping things is interfering with or slowing down your daily life. If it really is, then go to a doctor. Another clue is if other people notice a problem. I am around hundreds of kids all day and they drop things constantly. Dropping things is normal to some degree. Dropping the same thing repeatedly in the same few minutes every day several times is probably not. I drop things usually because I am preoccupied mentally and not paying attention. Worrying if you have a deadly disease will do this to your mind as well.