Pneumonia, bronchitis, asthma - what is going on?

You should try getting the remaining symptom(s) checked out. I would just go to the same doctor at first, no need spending extra money on a specialist if your doctor can help. It could be any number of things. You could just not be over it yet or you could be developing asthma symptoms or you could even be having allergic reaction to the medication. I would talk to your doctor first because your doctor knows you better and knows about what your symptoms were like before, etc.