You were screwed.

You had multiple stab wounds.. all in non-lethal locations. From presumably the unsub.

I mean you made full recovery in the end, but when you came back to work.. things took a turn.

Hotch had been worried absolutely sick. He heard what happened. and it sent him into a ptsd attack..

so when he saw you.. all bruised and still healing..

it triggered again. he had a flashback to Foyet.. and what happened to him..

his breathing quickened.. and he started thinking illogically.. his hands started to shake.. and he felt like he was right there again.. beating Foyet to death.