Uhm, that’s your companies fault; I’d be on them like a fly on shit for fucking up… you shouldn’t have to suffer because they’re incompetent of doing their job!!
And if you can’t even walk now; then something is SERIOUSLY wrong and a DR is needed no matter whether or not u want to go. Ice and heat and time off your feet aren’t going to make this type of pain/injury go away, and knees are NOTHING to fuck with when you are young, they will come back and haunt you later in life.