Tired

I am tired. I have been in the NICU since 2002. I have seen management come and go. They usually don't last long. The Supervisor we have now wiggled her way into this position. I didn't get along with her as a staff nurse and now she is supervisor. I have been looking for a new position elsewhere in the system. Since I have been in the NICU since 2002, they tell me, I am not qualified for the positions I have applied for. I have done some of these jobs in the past, but its been too long. I earned my BSN last year and have applied for a Supervisor and Lead position. They say I'm not qualified, even though I run a nonprofit where I create policies, deal with volunteer issues, and run the program. I applied for the Lead job on 9/16/15 and received a letter that they received my application and would contact me if I met the qualifications for the job. I still haven't received anything. I am tired and frustrated. Policy change in our unit with out an email telling us to view the policy. We work at 150% productivity. My assignment yesterday was not appropriate, but there is not staff to come in and help. I was suppose to work from 11am to 7pm yesterday, I punched our at 830pm with no break to eat. Thay seem to think this is OK. I never sat down except to chart after giving report. It's not safe and I am tired. I have been with this company since 1998, I am ready to give my 3 week notice without a job lined up. I am willing to go anywhere, flipping burgers even sounds good at this point. McDonalds was my favorite job back when my kids were young. They treated you like a person not a machine. You felt appreciated when you left. I left yesterday feeling defeated. I told the next nurse this baby needed a followup blood sugar at 11pm because the IV had been stopped. Our policy was Q12 hours X's 2 when we stop an IV. Well apparently that changed and we were never told. Do I have to look up every policy on everything I do before I do it to make sure nothing has changed? DONE!