I've been having my heart race and palpitations chest pain for about 4 months I'm scared to run because when I do and physical activity I get my heart pounding super fast and it scares me. And also I have been having headaches sthat make me get dizzy I'm so scared I'm going to get a stroke because when it hits me I start to panic and from there my life goes to hell . What can cause these daily headaches PS im 16 and I have been to the hospital for my heart and apparently everything is ok but I don't feel ok I also stopped playing soccer because I'm scared and advice