Hello I am a 13 year old boy and I run. It started at one race I was in, right after it I felt a very bad pain, a 9 or a ten. Then it goes away, but I can still feel a dull head ache during the day. When I jump, lean over, or run this aggravates it. I am very worried. (Also I have anxiety, genetically). Does anyone have an idea what this is from? Also I have been tired and not as hungry.