"risk for bleeding" is defined as " at risk for a decrease in blood volume that may compromise health (domain 11: safety/protection, class 2: physical injury)" what features put this patient at risk? just having had surgery isn't really enough support for this, imho.
how would bleeding affect the person, specifically?
do you own a nursing diagnosis book? it's helpful nanda-i 2012-2014 is the current definitive resource, available at your online bookstore. among other nursing diagnoses you could find there, depending on your assessment of the actual patient:
disturbed sleep pattern: time–limited interruptions to sleep amount and quality due to external factors (domain 4, activity/rest; class 1, sleep/rest)
dysfunctional gastrointestinal motility: increased, decreased, ineffective, or lack of peristaltic activity within the gastrointestinal system (domain 3, elimination and exchange; class 2, gastrointestinal function) (common after any abdominal surgery)
risk for dysfunctional gastrointestinal motility: risk for increased, decreased, ineffective, or lack of peristaltic activity within the gastrointestinal system (domain 3, elimination and exchange; class 2, gastrointestinal function)
readiness for enhanced self-health management:a pattern of regulating and integrating into daily living a therapeutic regimen for treatment of illness and its sequelae that is sufficient for meeting specific health-related goals and can be strengthened (domain 1, health promotion; class 2, health management) (applies to parents)
impaired comfort: perceived lack of ease, relief, and transcendence in physical psychospiritual, environmental, and social dimensions (domain 12: comfort, class 1: physical comfort; class 2, environmental comfort; class 3, social comfort)
nausea: a subjective phenomenon of an unpleasant feeling in the back of the throat and stomach that may or may not result in vomiting (domain 12: comfort, class 1: physical comfort)
acute pain: unpleasant sensory or emotional experience arising from actual or potential tissue damage or described in terms of such damage (international association for the study of pain); sudden or slow onset of any intensity from mild to severe with an anticipated or predictable end and a duration of less than 6 months (domain 12: comfort, class 1: physical comfort)