hello, Do you have any gastric reflux? Irritants that dry out throat tissue will cause your symptoms when throat is empty. at night you are reclined, heating system may be a factor and some mucous may be produced by the body to lubricate the throat. That can give you that choking cough feeling. Other systemic causes such as a polyp or tumor would require diagnostic testing such as an endoscopy. If symptoms worsen consult your Ear nose and throat specialist. Keep well hydrated and drink plenty of water often. Consider a routine dental exam if you are not up to date to rule out various dental infections. Thank you for your inquiry. I hope that my suggestions are helpful.