Running endurance problem? Pain from throat to groin. Feel like fainting. What's wrong with me?

Hey, pain is your body's way of telling you that it cannot handle the intensity of the activity. You have to build your cardiovascular fitness and muscular endurance before you try running for a long time. Try keeping a light jog, and then only push yourself towards the end. Or you could run for a minute and then walk for the next minute alternately. Good luck.