Sounds like allergies to me. Maybe it's something in your bedroom that is triggering it. It could also be GERD. If you have silent reflux it can be coming up and getting into your windpipe.
if it's allergies a simple benadryl at bedtime will help. If it's GERD then you need to see a gastroenterologist.
Lupus, RA, Fibromyalgia, Glaucoma, Asthma, Hypothyriodism, Sleep Apnea, Depression, Allergies, and benign familia tremors
When life throws you lemons....
Pick them up and throw them right back at them! :))