Why would i have a dull achy pain in my chest then goes to my right arm thats all dull n numband then my chest hurts a little more ?

See a doctor now: There are several things which could be causing your symptoms. But dull achy pain which moves to you arm has to make you worry about the heart. An impending heart attack can have these symptoms also. The key to successful treatment of a heart attack is to save as much heart muscle as possible. The earlier this is diagnosed the more chance there is to save muscle. Go now.