Seeing yourself coughing in a dream could be a worrying experience that could have different meanings as per Islam.
1- According to Ibrahim Karmani رحمة الله عليه coughing in a dream indicates sickness.
2- If someone sees that his cough is stuck in the throat, it means that his death awaits him.
3- According to Ibn Sirin رحمة الله عليه the greatest dream interpreter of Islam, ejecting sputum while coughing in a dream means that he would be complaining about his problems to others.
4- Dry cough in a dream means that the dreamer’s complaints would be big and disgraceful.
5- According to Jafar Sadiq رحمة الله عليه coughing in a dream indicates a trial from the King.