I actually spoke with my manager, she told me the Doctor emailed her to complain. My manager spent hours reviewing my documentation and medication administration as well as my communication log with the MDs and she told me she did not find any mistakes. She congratulated me, gave me a gift card and mentioned me during the weekly bulletin she sends out to the unit. The patient mentioned to my manager how great I was, and that I did everything in my power to help her. I made no mistakes which is a huge relief. Thanks to everyone for your comments.