LO had a rotten cold about 3 weeks ago and the terrible cough is still very much with us. He coughs extremely hard especially during the night, which wakes him. It sounds awful but a doctor has twice listened to his chest and said it's clear. They've taken swabs to test for whooping cough (I thought this was unmistakeable though?). A friend suggested that it might be asthma?
Does anyone have similar experience they could share and some advice please?