My son 3 years boy. I m in uk. bef cold Nd now normal summer. 3 Nd of month he have cough in night time mostly one r 3 sec non stop when his body s heat fry cough l com... 2 Nd half month bef his nose blocked Nd cry aft I put two times calpol nasal drop in his nose aft he feel better... he went out in evening time without cap aft only cough came fr him.. last month we went t hospital thy told t take COVID test it’s negative... he have normal cold, we clean home fully Nd check but cough l come... I dint give any medicine,,, here till now doctor give any medicine... he s normal only everything s good... this week two days he went loose motion one day he went normal just this week only... I don’t know wt happ him... when he s sleeping aftnoon Nd night time might night nd early morning cough l com 4 t 5 time 2 second cough thn he sleep... I don’t know wt happ him...