I Hello, I m a 67 male with type 2 diabetic for 10 years, A1C 6.4 I think I m pretty healthy. Mother died of stroke at 78 and father died of bladder cancer , found at age 96 and passed 97. I have a nagging cough, kind of dry tickle that make me clear my throat often. This started about 2 months ago, should I be concerned ?