"Gag me with a toothbrush"

Has anyone out there ever had a gag reflex? This is new to me. The past few months I have had an irritating cold which seems to come and go. With it comes an even more irritating "Gag Reflex" when brushing my teeth and coughing. I used to think gag reflex was a term used for my sister's weak stomach, long car rides and the occasional high school hang over. Now I am gagging every time I brush my teeth and cough And I am no high scholar. It is almost like throwing up without going through the motions. I hate throwing up!!!!Even during Chemo IV treatments I held it together for fear of going beyond the gag. Now I wonder if I should be concerned? I do not like this.

Do tell if you have any advise. I am gagging over here !!!!