Dull/achy pain right under my ribs kind of..upper right stomach area & it goes down to my mid stomach a little bit to the right of my navel. ?

Many possibilities: Could be a strain of the muscles attached to your rib cage from activity/exertion. If nausea, pain with eating, especially after a fatty meal, we worry about gallstones (unusual at your age but possible). If pain/burning with urination we worry about a kidney infection. A urinalysis will exclude a kidney infection. If this persists or worsens, see your doctor!