Nursing career change: dont know what to do

I injured my shoulder 2 years ago, the dr says i can lift 20 pounds frequently but 50 pounds max occasionally. I have took interest test and such and they all point back to nursing, which i have been told i can't do. I was wondering if anyone else has been in this situation. I am an LVN now, but before i was a CNA is there any jobs out there that i could do in the medical field without having to lift?