how soon is too soon?

So I took the first job I was offered at a hospital 45 minutes away from where I live. I have only been there 6 weeks and I am not out of orientation. I really want to give myself 6 months but honestly so far I am not sure if I like it. I am still really unsure of myself and my orientation is almost over. My preceptor honestly makes it worse. she stands over me and just waits for me to make a mistake. she is very intimidating. I am always asking questions because there is just so much that i feel like maybe I forgot from school and she acts like I should already know more than I do. I know my skills aren't that great at times but I have never done anything to compromise a patient's safety and that is what she put I my evaluation, that I need to put patient safety first. She also put that my strength is never hesitating to ask if I am unsure. Isn't that contradicting? Some days I feel so nervous heading in to work. A part of me wants to apply somewhere else, somewhere closer and maybe a different dept. The floor a work on now is a med surg clinical decision unit, a lot of tely patients. and patients are always coming and going and we can have up to five patients at a time. Should I wait it out before I start applying somewhere else?