I have a lump near my right shoulder blade.. it causes me pain an discomfort almost all the time. should i have this checked out?

Get it checked: Anything that causes chronic pain, decreased function or interferes with your activity should be evaluated by a physician. Best wishes

Sure, check it out.: In a young person such as yourself, it's most likely nothing serious, like a lipoma ( benign fatty mass) . But you don't need to be bothered by it. Have it checked out and removed. Good luck!