What's if mean when my lips are numb n iam light headed n keep going dizzy n head feels right light and chest feels tight and blur vision ?

Nerve pain: It is difficult to say without examining but the pain you are describing sounds like nerve pain. Nerves can get pinched at the level of the neck. The chest pain may be due to referred pain from a pinched nerve as well or due to inflammation of cartilage. It can also be something more serious like a brain tumor . You need to get examined by a doctor asap to get the correct diagnosis

Hyperventillation: If your DR finds no medical abnormality, then you are breathing too much due to anxiety. The low CO2 caused by this will produce these symptoms. You might do an experiment by breathing hard until you reproduce similar symptoms. You may also feel that your heart is beating fast or hard. You may feel that somehow you feel that you are not able to breathe deep enough. Breathing in a bag makes WORSE.