So sometieswhen i wake up in the morning i feel this pressure on my chest, throughout the day the pressure dosappears, this does mot happen frequently?

Let your folks know: I would let your parents know about the symptoms you are having since there are some cardiac conditions which can go undetected until later years such as adolescence or early adulthood. Although the chances are great that nothing major is wrong with you it would still be a good idea to have your cardiovascular and pulmonary systems checked out. Let us know what turns out.