Help! I want to become a pediatric Nurse.

I just graduated nursing school this May and did my preceptorship on a pediatric med-surg floor and I fell in love with it. I love children and find growth and developement absolutley fasinating. It is the only area of nursing that I am truly passionate about and can see myself doing it for the rest of my life. I did interview for position on the floor after graduation and unfortunately I did not get one of the few positions avaliable, even though I felt like I was well like by the staff and had a letter of recommendation from the charge nurse on the floor who really like me. I was completely crushed when I found out I did not get the job and it is the only childrens hospital in my area. I looked all over my state for a posible position elsewhere with no sucess. I did get a position on and adult med-surg floor that I will be starting in a month, but as my start date nears I am feeling extremly anxious and fearful that I will go to work every day and hate my life. I have been trying to remain poitive and hopeful that it will be a different experience working with adults now that I am on my own. I know jobs are few and far between now with the way the economy is so I figured any experience is better than no experience at all, and everyone says that you should do med-surg first, but I feel like this is old fashioned. Does anyone have any advise about how I can transition into pediatrics after I have a year of med-surg experience??? Or any advise on what I can do in the mean time to keep up on my pedi skills. I really want to go back to school to become a PNP but I need at least a year of experience before they will look at me. Help!