I have congenital stenosis at c2 and c3 could this be come severe later on in life. what are the symptoms of it?

Definitely yes: Longterm issues associated with congenital stenosis are: degenerative disc disease, bone spurs, slipping of one vertebral body on another (subluxation), and further narrowing. Symptoms of these related to cord compression and loss of nerve function: numbness, weakness in the arms/hands, loss of fine motor control. Relief of severe symptoms is via surgical intervention to decompress and fuse..