Based on your description, it sounds as if you have some possible decay under your veneer. The consequence of doing nothing about it, will likely lead to you losing the tooth. There is a possibility that when your dentist removes the veneer, he/she will determine that the tooth needs to be extracted, but there is also the same possibility that your dentist will determine that the tooth can be saved. However, doing nothing will only make extraction more likely in the immediate future. Good luck and I hope this helps. Follow me if you have more questions.
Sarah Thompson, DMD