Employer indirectly trying to make me be cna whole shift

[lpnnewb]

This is my first job as an lpn, and was hired also to be supervisor in charge at assisted living place. I was not told during interview that I had to be a cna for a full shift while being supervisor in charge or I wouldn't have taken the job (and passed up another great job offer.) I haven't even been there a month yet and last 2 week-ends they didn't schedule a cna on a floor they normally do. The staff told me I had to be a cna, which I've never been, am 50 yrs. old and don't think I can physically do the work and never been certified nor properly trained. In clinicals, I always asked for assistance and greatly appreciated the cna's for helping me. If I don't accept the assignment, the another med tech. / cna on opposite hall has to do both halls. I told her I would gladly help with everything I could, but did not feel I was properly trained to accept whole floor. In the meantime, there's another med tech/ cna walking by hoping to catch me do something wrong because I wrote her up for purposely withholding a prn pain med an elderly patient requested during a procedure, that she could have had and needed. The scheduler has worked as a cna and has attitude "do I think I'm better than her?" Tried to talk to my rn manager who quickly had to get off the phone. I feel it's a power play and see it going on with other employees. Oh and I don't even have a log-in id or pw yet which I keep requesting so I wouldn't be able to see most current info. on pt. nor document I did anything else like everyone else does. Me feelith like a fool. Not to mention, if there was a fall, or other incident, I would have to leave and tend to it bec. I would still be superivisor (used loosely) in charge. Sounds like I'm being set up to fail, or is this normal unbeknownst to me?

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