Sarah, I'm slow getting on board, so your day is all but over. I hope you've had success with getting to uni and seeing your tutor and all. I'm sorry your knee is giving you grief when you've already got quite enough stress on your plate. Sending lots of vibes and prayers for things to fall into place for you.
Sarah, does your university have parking spaces for the handicapped? Back when I was studying, I hurt my knee and was in a splint for six weeks, and the campus police gave me a "temporarily handicapped" pass so that I could use the parking spaces as long as the splint was on.
I was thinking the same thing about special parking spots. Take it easy on your knee and don't stress yourself out. I bet everything will work itself out okay for you !!
vibes coming {{{{{}}}}}}