Really desperate cramps...?

ok so im 14 and every time i go for a run i carry really really bad cramps. they r similar to period cramps but a million times worse. and when they go and get really really bad i basically walk for a mile or so but they dont win better till i totaly stop walking and runnign for about 30 min. what could this be? is soonething wrong near me? what should i do? does it happen outside of running? you may be pulling a muscle or something. I doubt anything is horribly wrong next to you. sounds like you purely pulled a muscle or like when you run and you receive a really bad side sting. I would just thieve it easy on the running for a bit. if it still happen then dance see a doc. good luck
You should turn see your doctor they can explain what is wrong based on your medical history.