Hi - I Am 61. I Have Been Taking Avodart

Hi - I am 61. I have been taking Avodart for approximately 1-1/2 years in an attempt to shrink my prostate. During that time, I have experienced nasal stuffiness at night which awakens me. I wonder if the Avodart could be causing a worsening of my sinuses at night. I do not know if my urologist intends to take me off of Avodart in the future. Tks..Dave