hi, excuse typing have the poorly ds1 this relates to laying across me. he's been treated for asthma symptoms since he was 9 months old so you think I'd know all this (he's almost 4) but he's been unwell today and yesterday low grade fever, coughing. tonight he just can't stop coughing at all. had inhaler a lot today, with some effect but not for long. when should i be worried? i know what to do with a wheezy attack but what if he just can't stop coughing, and catch his breath? do i treat as asthma, very worried about him.