I can totally empathize. I was hallucinating (auditory as well as visual and tactile), I had all kinds of other stuff going on, and eventually what happened is I ended up with a string of diagnoses: borderline, panic disorder w/ agoraphobia, dissociative disorder, eating disorder not otherwise specified, depressive disorder, OCD, and then of course my history of addiction.
I saw another psychiatrist very briefly several years after all of these diagnoses and she said that, in her opinion, she'd scrap the rest of it and say I had a severe and prolonged case of untreated PTSD.
In the beginning the labels were important to me so I could get help, but what I found was that I wasn't 'enough' of any one thing to get the help I needed, and by the time I did start getting attention for my 'labels', the only one anyone seemed willing to focus on was borderline, and even then only as an excuse to ridicule, shame and invalidate me - in their estimation, the only reason I could possibly be in the emergency room was because I was attention-seeking. It had absolutely nothing to do with my other symptoms. Ironically, out of all of them, the borderline is the only part I don't have a problem with; it was misdiagnosed.
I don't really know what the labels mean. I know that I cannot take most meds, I'm supersensitive to stimulation of any kind, and my life is a living hell more often than not. I'd say if you think the labels will help, then push to get another opinion. I've found that even with them, I'm still pretty much on my own, not only because of the aforementioned reasons, but also because the symptoms are so acute and so random that even the well-meaning professionals, few and far between as they may be, have absolutely no idea what to do with me.
If it gets hard (or when it gets hard, as the case may be) and you need someone to talk to, feel free to PM me. I usually check in every day, even though I may not actively post in forums all the time. Good luck with it all. It can be such a pain in the ***.