I'm self-taught and new to bass, and I tuned my bass today (E-A-D-G, E being the lowest), but the E String seems a bit loose (It hits the neck sometimes, and I can bend it much further than the other strings). Is that normal? Have I done something wrong?
Has it been like that all the time you've had it? How did you tune it - with a tuner, by ear, against another instrument? What bass is it, and what gauge strings are on now? All points which are needed to give any helpful answers.
Going on the sparse information rendered, all I can suggest is you tuned the bottom string an octave too low. It wouldn't be the first time something like this has happened - the tuner says 'E', but that E could be an octave too high or an octave too low.