Will the hospital immobilize my foot?

im 15 years old and into sports very much!, i have hurt my Achilles tendon and my ankle, because i was in so much pain when i visited the hospital when they touched my alf they thought i had a blood clot which they couldn't check as my leg was shacking so much, they strapet it up with a bangade just below knee hight, so they asked me to come back after to says if they pain doesnt go away, what examination will they do will i go in a ast or will the give me a boot ? thaks