Getting into nursing school will get you into the nursing field. What I would suggest would be the most helpful action would be first getting a job as a CNA. I worked as a CNA while in nursing school and it was a great introduction into the responsibilities nurses posses in their shift. I became aware of many things they do I was unaware of (and very surprised about). Obviously, those things didn't scare my away as I have been an RN for 11 years. I can tell you there were many people in my nursing school who had never set foot in a hospital and never saw the day to day responsibilities a nurse held and some of those students dropped out. Unfortunately, their enlightenment wasn't until after 1-2 years into the program, after spending thousands of dollars on tuition, and MANY hours on coursework, only to find out this was not the right profession for them. Get some experience, ANYWHERE, so that you are fully informed on what you will be doing the rest of your life.
Also, if you are already employed in healthcare, most likely your employer will be anticipating your graduation and take measures to retain and employ you as a RN. SO, it is pretty much a guaranteed job offer once you complete school.
As a side note, nursing schools are more interested in applicants who are already working in the healthcare field. The reason is described above. They want their students to be happy and successful, and for their program to have a high graduating rate.
Good luck in your future endeavors and I hope this advice is useful in your journey.