Brooke..RN

Ok, I am new to this site...so I am hoping to get some feedback! I am a new grad (RN) and just obtained my license in August. I was an LPN prior to becoming an RN. My past experiences include LTC and some geropsych. Recently (3/2011) I was offered a job in the ER at a local hospital. THRILLED, I immediately accepted!! I loved it!! The pace, the variety and not knowing what to expect from minute to minute. All that aside, I feel cheated, let down, failed!! First day of orientation started out just like any other! "Here is where we keep this, here is how the rooms are set up, this is how the ER flows, here is the bathroom...etc" For the first 2 hours, that is. Then the ER got swamped and it turned into "just follow me and watch what I do." Which quickly turned into every day's routine. Then my preceptor started pulling away and letting me do assessments and some triage. Then before I knew it, it was my first day on my own...still in "orientation," but on my own. NO ACLS, NO PALS, NO TNCC, NO EKG COURSE!!! I had....literally....16 days of orientation (6 weeks of 12 hr shifts, minus the last weekend). All my fellow nurses were cheering me on, telling me I was doing a great job and to keep up the good work. They all liked my positive attitude and made sure I kept it. Most nurses were right there if I had questions or needed help with anything. Last week my boss called me at home and asked if we could get together within the next couple days and talk....I KNEW WHAT WAS ABOUT TO HAPPEN, I FELT IT. She told me that some of the nurses were concerned that I "wasn't getting it," and that I probably wouldn't "get it." And that she had to terminate my employment.....WHAT???? They all told me I was doing well.....I was so confused. I asked for examples. She gave me an example of a situation in which the nurse telling her the events did not tell the truth, and gave me another situation in which there was absolutely NO WAY I would have/could have known the answer to...had never even heard of the possibility before. I was the primary nurse for Coreg/Plavix OD, insulin/Metformin OD, and numerous other life threatening situations....WITH NO EXPERIENCE other than BLS!! I feel cheated! Failed! I cried for 2 days! I am so upset! Talk about feeling STUPID. So my question is, is 6 weeks of orientation enough for a new grad? In the ER?