Since my wife was over the age of 35 when she was pregnant, and because I am a carrier of the most common genetic mutation associated with cystic fibrosis, we had amniocentesis performed during her first pregnancy. It showed that my daughter is indeed a carrier. This is information that will help her in the future. My son is not a carrier, which is good.
The procedure carries some risk of miscarriage. Maybe half a percent. They usually perform these procedures at between 16–18 weeks, if I remember correctly. I seriously doubt you have an risk factors that would make such a test something to consider.