Has anyone had the titanium plate crack while still in the neck?

In 1996 i had a double disc surgery in my neck. They used coral implants with a titanium plate to secure. 3 years ago i had an xray taken that showed the plate had cracked in half. I had requested the xray due to discomfort in the area of the surgery. Recently i had another xray taken and it revealed that the bone is starting to grow over the top of the plate. My throat always feels scratchy, i have lots of mucus and pressure on the location causes me to cough or discomfort. I am looking for answers ~ Tammy