Leaving 1st job right after orientation

I was hired as a new grad in the OR to be a circulating nurse. I was really excited at first, but I quickly figured out this was not the area for me at this time in my life. I think part of it has to do with the hospital, and part of it has to do with the environment...Crabby doctors (yes, I know they're everywhere, but in the OR you're stuck with them in the room), and poor communication throughout the unit. Also, even though it's been a great experience, I feel I'm missing out on learning all the basic nursing skills. So, I've applied for a couple med-surg positions (I know I'll be stressed out here too, but I've gotta try!) and got a job offer literally the day I came off orientation. I am super excited to move and start this new journey! However, orientation in the OR is 6 months...I feel SO bad and terrified to give 2 weeks notice because we are short on nurses, and i JUST came off. I know the unit is going to be talking about me behind my back. How can I deal with this and how can I go about giving my 2 weeks? Any advice is welcomed! Ah