Received1099C after I E-Filed my taxes.

Hi there, my husband and I went through a debt program this year. Didn't realize this was taxable. I received 2 1099s from a creditor. No idea on if I'll be getting more from others or not....

 

Anyways, the point of this question is that I already E-Filed my return. Am I required to amend the return? How and when do I do this? Should I wait to see if I receive anymore 1099-Cs? Any help is appreciated.