I know your pain man. I'm sick right now. Yesterday I had a 103 fever and felt like a sack of smashed assholes. Not the flu but I'm total weak sauce. Although tonight I feel 100% better, I tried chopping firewood for 5 min tonight and was gassed. I said fuck it and went back in.
Don't sweat it dude, the Iron game is a marathon not a sprint. You'll be back in no time. Bronchitis is no joke man. Don't think you'll just get better if you nurse it, go see a doc and get something for it. Every day you wait is more damage to your lungs and a longer hiatus from the gym.