Suggest Treatment For Pneumonia Causing Severe Cough And Flu Symptoms

I am 72 years of age and was told that I had pneumonia..I am a very active person and found it strange
because I sometimes get the flu and colds and don't have too many difficulties getting well. This feelings
with severe coughs especially has me worried. I was given antibiotics namely moxifloxacin 400mg and also
a puffer symbicort. Am I ok and can I go walking in the cold weatheror do any activities?