Why did taking antibiotics make me feel even more sick than before?

I had the flu about a month ago and since then I've been coughing pretty much non stop, I went to the doctor and got some antibiotics and after two days I basically have the flu again but even worse my throat is on fire, I can't stop coughing, if I try to sleep I wake up suffocating and I am exhausted I... show more I had the flu about a month ago and since then I've been coughing pretty much non stop, I went to the doctor and got some antibiotics and after two days I basically have the flu again but even worse my throat is on fire, I can't stop coughing, if I try to sleep I wake up suffocating and I am exhausted I haven't slept in two days what is going on with me?
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