When did you....

Start feeling comfortable/confident as a new nurse? I graduate in 10weeks and needless to say im a bit nervous like I won't know what to do...is this normal? I read my books faithfully but havent had too many first hand experiences (I guess like many new grads) my clinicals were mediocre (out of my control) so that hasnt helped. Can someone also give me a step by step play on the moment you get to work until the moment you leave? For instance after receiving report and figuring whats next? Our labs spent a lot of time what feels like diagnosing patients (clearly we are not doctors) and initiating treatments....for instance our professor would give us a scenario of a patient in the er with a list of symptoms and what do we do first? Do nurses in real life start on patients without getting a doctor's Dx? wouldnt the doctor have to see this patient before I start giving meds and what not? (I know) .....feeling a little all over the place with my rambling thanks.