How often do you end up getting done late?

I punched out an hour over the other day. There had been three interruptions before dinner (someone was bleeding, someone else coughed during suctioning and blew snot all over my arms, and someone else's machine would not cooperate). When I went up to feed in the dining room we were short some CNA's and I had to go between two tables and feed four people! I spent an hour up there, thus went to lunch late, took only twenty min., and started my 8pm med pass/treatments at 7 but the charge nurse had been on since 7am so it was me and the other nurse to man the desk, 60 patients, and the front door buzzer/alarm plus answer patient calls and do extra paperwork. By the time I finished meds/treatments it was 10:45 and it took me until 11:45 to write report, give report, type report into computer, put narcs away, count with the oncoming nurse, sign the treatment book and sign the sheets the desk nurse usually does, AND give info to my oncoming replacemtn who was from an agency and had only been there once and needed to know who was a crush, whose extra stuff was where, etc. I was exactly one hour over. It was the end of my third week.

I know that the Coordinator told me that it happens more often than not, and not to worry about getting in trouble for being late, because interruptions happen, but I used to work for places that made you punch out and keep working (of course, it wasn't a nursing home, but in home care they expected me to take total care of a paralyzed person in two hours and sign off and not get overtime). Also, I am new at this but I can't help feeling that the nurses who have been there for a long time are thinking "She needs to be faster." Well, I must be pretty frigging fast because I've lost 8 pounds in three weeks! I am getting better every night and these interruptions and the loss of a desk nurse were unexpected. I have a routine down now and was not behind at all the day before.

Is this common? Do I have to worry about getting written up? My total overtime for the week probably added up to a total of 2.5 hours, but still...

I love this job and I adore my patients. I do not mind the physical activity, but I don't want to live in fear of being pressured to always get done exactly on time. Sometimes I think the ones getting done early are either letting the aides put the creams on (not supposed to) or they are giving 8pm meds with the 4pms so they can skip those people!

HELP!!