Wildcat_RN

I graduated as an RN with an Associate's Degree in 2011. I now work night shift on a telemetry/obs unit and have been there for one year. I really like my coworkers and am pretty happy with the management. I don't have any issues with patient care or passing medications etc. My problem is that I feel like I do not know enough. I would like to work day shift but am afraid to because I would have to interact more with doctors and family members. It seems like everything I learned in nursing school left me as soon as I graduated. When doctors ask me "How is the patient doing?" I often don't know what to tell them or I give them a run down of the patient's situation and the doctor seems unhappy with my answer. Patients sometimes ask me questions about their procedures, medications, or current diagnosis and I feel as though I never have the correct answer. A lot of my patients ask me how long I have been a nurse and I think it's because they can tell I struggle with answering their questions about anatomy/physiology and how/why their body is doing what it is doing. I am a slow learner and I have to review things several times to get them in my head. I am afraid that I am not capable of critically thinking. I frequently ask questions and when my charge nurse or other coworkers give me the answer it seems so obvious. I immediately think "Well duh, Why didn't I think of that?" I also struggle with comprehending how the body systems work together. For example, when I first started this job I had a patient that kept having anxiety attacks and my charge nurse looked into the situation and said that according to the times of each attack, they were most likely due to the routine breathing treatments the patient was receiving. I never even thought of that. I can't think of more examples right now, it just seems like I struggle with problem solving and figuring out the cause and effect of certain health issues. I really enjoy spending time with my patients and helping to ease their fears associated with hospital stays, but I feel like I know nothing as far the medical background goes. I think I would do much better learning one body system/health issue and dealing with only that area. For example, diabetic teaching etc. People tell me it is normal to feel how I am feeling at this point in my career, but I know that I am not as intelligent as other new graduate nurses that started after I did. I know that I will learn more as I gain more experience, but I feel like this is an issue that will be never-ending. I am not a confident person and wonder if maybe I took the wrong path with deciding to be a nurse. My father is a nurse and he told me that I should take any and all classes I can at work to continue improving my knowledge. I do take all the classes I can, but so much information is crammed into each short session that I cannot remember half of what was discussed once the class is over. I frequently leave work upset and I always feel nervous/sick when heading to work each evening. I do not want to go back to school. I really do like working 3 12-hour shifts per week and I am able to take frequent vacations to visit my family and to work on my house. I know that becoming a patient educator would most likely require me to have a "9-5 job" and work Mon-Fri which I don't really want. I have thought about working in a doctor's office or health department, but that seems too slow paced for me. I am very stressed about this and don't know which direction to take as far as my career goes. I would greatly appreciate any advice.