HELP: the end of my recording disappeared when I uploaded some audio onto the recording

So I uploaded additional audio to the top of my episode to correct part of the recording, and then the page crashed. When I got back onto that page, the audio successfully loaded, but the end of my recording disappeared. I refreshed the page a few times more, left it open to see if it would reload, and I’ve had no success. This epsiode airs Friday. Hoping to resolve it before then.