More painful than shin splints?

Track started 2 weeks ago, and we practice in the gym on hardwood floors, and I'm a hurdler. I hav been working so hard this season, but my left calf has begun to hurt. It started about 3 days ago. At first it was a dull ache on my inner left calf, but it only hurt after I did a vigorous set of sprints or hurdles. My mom suggested it was shin splints. Since then it has gotten increasingly worse, even though I ice at night, at school, and at practice. The pain has moved to the front of my left shin, along the fibula, and not only is it a sharp pain during hurdling, but a slight tinge when I walk, and a throbbing ache after I stop working. It was so bad that today I had to stop working and get ice, but I could barely hobble up the stairs and had slight trouble walking, even though I wrapped my leg in an ace bandage. It seems more severe than what my teammates have explained as shin splints, and what I've read on the Internet. Tips on ways to make the pain less severe since I have my forst track meet tomorrow and I MUST run! Help?