'I'd like to go, but now I'm down with a bug.' I guess 'bug' here means some kind of sickness. Does this sentence mean 'I'd like to go, but now I'm sick'? It makes sense but I'm not sure. By the way, can you tell me some other way of saying 'I'm sick', like fever, diarrhea, headache? Since the sentence pattern 'I'm suffering from a ...' has been used too many times, I really would like to know some interesting expressions. It'll be much appreciated!