Almost failed a lab redemo

I feel awful right now, I cant believe I forgot to check respiratory sounds when performing an abdominal assessment post bowel resection and forgot to ask the patient (actor) if they voided or had a BM. I feel like such a moron, I also forgot to explain to the patient (actor) everything I was doing. The instructor didnt even want to pass me she said someone else would tally up the marks and grade me. I mean clearly my lab or clinical teacher took pity on me and passed me, I feel like such a failure and feel totally incompetent and like I know absolutely nothing.