Do you have someone that may ahve injured a gfoot and ahs an ortho show. It is rubber sole with canves shoe top that velcros across your foot. If you time in theAM maybe the doctor can send an order to a medical suppy and have you fitted for one ASAP. If not a inexpensive pair of KEDS white canves sized bigger, take the lace out...
I hope the swelling goes down soon.
If I can find the most recent one for my daughter I would happily mail it to you. I will look around her place.
Dianne

This type of post op shoe I meant..
http://dme-direct.com/images/MeshTopPostOpShoe.jpg