I had to run 2 miles as fast as I could for wellness class in college, and I really pushed myself. I ended up doing it in 12 mins (2 6 min miles), and after i was done needless to say i was short on breath, but my heart hurt really badly and the whole left side of me went numb for like an hour, anyone know if I should be worried about this or if I just pushed myself too far and I should be ok now?