This may not be relevant, but some patients experience depression post-surgery as a result of their pain medication. Many narcotics carry with them side effects related to mood, specifically depression. My mom is recovering from an unrelated surgery and had to change her pain killers as she had relentless bouts of crying and sadness. Now on new pain medication, and only needing very limited amounts of it, she is much better. Anesthesia also takes some time to work through the body, sometimes causing mood issues directly post-surgery.
You should talk with your doctor, though. It could just be the frustration of recovery getting to you. It could be the limited diet. It could be medication. Or it could be a combination. Let us know how it goes!
Post Edited (CaliGal) : 3/8/2016 5:22:05 PM (GMT-7)