Help with glasses/contacts?

so about a week agp i left my glasses at a hotel. and i JUST now ran out of my last pair of contacts so i am without anything. My eyesight is a 4.2 so its really not safe to drive or anything. i ordered a few boxes of contacts but they wont come in till about thurs or mon. is there anyway i could go get a backup pair of glasses within a day? like at walmart or something. or will i have to wait a week for them to put the prescription in and everything?