Allistone

Hi everyone! I'm a new RN and started my first job in a sub acute/LTC facility about 3 months ago. My facility is very understaffed so they are often asking everyone to change schedules days before or even the day of. I've gotten calls from my facility nearly every day to change my schedule around and if I say no (I've made plans already or I just don't want to), they try to guilt me into feeling obligated to saying yes. I was originally hired to work 3-11 part time, but my schedule for the next month is 7-3 since that's what they need. I understand that being a nurse comes with having an irregular schedule, but I'm getting tired of the unpredictability of whether they're going to change my whole schedule for the week at the drop of a hat. As a new nurse, I don't have any experience to compare this to and I was wondering if this was a normal practice in other facilities. Thanks in advance for your responses!