Coughing at night, Oral Cancer

Hi Everyone, I an glad to know soo many are pulling together and helping each other on the East Coast. Thank God for all who have opportunity to read this...soo many don't.
Anyway, does anyone know whats going on when you are coughing all night but not during the day?
Going to the doctor on Thursday. Will ask also.
Does anyone have or know about Oral Cancer?
Lots of things going on and changing quick.
Does anyone know about tissue damage from IV Infiltration?
Soo many questions. I do have them all written down for the doc.
Thxs