Can i put weight on my leg?

someone plzzzz help? a few days ago i got a huge cut right on my achilles. luckily it didnt get my whole tendon. i just got stitches and they put me on a splint and i have crutches. I am not supposed to put weight on that leg but im in college and have to climb up into a bunk bed. can i put pressure on my knee ? just not my foot? or is it all connected?