Feeling chills and muscle pain

Hi ladies has anyone one of u experienced chills and muscle pain? I went for an hour walk with my class the other day so I thought I was just tired from that. N next day after I'm still achy n feeling the chill.  It actually warmed up today so I know it's not the temperature. I'm also feeling some neasea and don't have the appetite to eat my lunch. Help? Should I go to the doctor?