How long does it take to get used to 12h shifts and working as a nurse? I just started my first job last week. Worked 3 12's in a row and it about killed me. I'm definitely a wimp. My feet are throbbing and were swollen after the first day. I am working med surg in a smaller hospital. I feel very incompetent, but I do think I'll really, really like working there. Any advice on how to make the adjustment period more pleasant?