Shin Splints Or Stress Fractures Or Neither?!

Well im a gymnast and last week i noticed that the bone in my shin started aching when i was doing leaps. I told my coach and she told me to ice it. Then she told me to get it checked out by the doctor. I thought nothing of it and figured it would go down in a couple of days, but i was wrong. It was aching when I ran and jumped and everything. Yesterday when i went to gym it hurt when i was running and everything. I couldn't do vault. Now today it hurts even when i walk! It used to be when i put pressure on it like when i ran and stuff but today at school i had to put ice on it. It hurt like crazy! I'm going to the doctor on Friday, though do you think i could possibly have shin splints or stress fractures?

Thanks in Advance.