I'm having pain in the middle of my chest, is that bad ?

Chest pain: it could be. need to be evaluated by a physician asap to see what the cause is.

Needs to be checked: At your age it is unlikely to be due to Heart problem as long as you do not have any congenital or acquired Heart Condition But I will still suggest you have it checked by your Doctor if it is of concern to you It can be due to inflammation in chest wall like musculoskeletal pain,due to esophageal reflux,from the lung and pleura or from the heart Get it evaluated by your Doctor