Replying to back problems

i got mad lower back problems. i run a mile and a half, i collapse cuz my back just like fails. if im runnin, it just feels wicked tense with a shooting pain in it. when i ski, well lets just say i squeeze my eyes shut in pain everytime i hit a tiny bumb. anyone else got this shit. its definately not gettn better so im gettn kinda worried about the upcoming season. doctor took x-rays said he saw nothn and it was just somthn i gotta live with, and take 800mg og ibprophen every day. i can live with this shit, hurts to walk sometimes. should i get a catscan or see what happens this season?
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Weed: My Anti-Drug