People can make mistakes, he was just assuming things too fast. You didn't tell him you were sick, he didn't see you coughing, he didn't know you had your eyes closed. Maybe he had a bad business trip and was in a bad mood, I wouldn't hate him for it. Acting so rash with a situation like this is a bad thing, its the cause of many feuds and inner hate which can lead to violence and sadness.
Of course you'll probably forget about it by next week, but still.