When you were a new teacher did you feel stupid?

I have always been a good college student; however, when I am teaching in an elementary school classroom I have difficulty teaching certain subjects. I feel as though I forgot how to do a lot of things and students ask questions that I do not have the answer too. Sometimes the questions are simple and I just don’t know how to answer it. I dont know if I am nervous or what it is but I have been feeling stupid. (Please no jokes because I am serious) I was on the deans list in college and graduated with almost a 4.0 but when it comes to teaching, I feel dumb. I feel incapable and lost. Is this normal?