Please help...I feel hopeless.

Thanks. What other problems are you thinking? I am currently taking Lexapro for anxiety/depression and Xanax as needed...but the Lexapro really doesn't seem to be helping me. What should I tell my doctor? I've been on it for 2 months. Also, I really don't have any anxiety any more in the physical sense...or at least, I don't think I do. My heart rate is normal and I never feel the butterflies in my stomach or anything. The weird thing is, my dissociation seems to be triggered by certain things. It is always present, but it gets worse in certain situations. For example, when I listen to music that is really deep and emotional, or when I go to my old home. It's frustrating because I am a musician and I have always been a passionate, sensitive individual.

Also. Is it normal with DP to feel like your short-term memory is all out of whack? I feel like time is distorted or something...almost like I'm on a bad trip.

Yes, it is a possible symptom. Nothing really is stable.
I don't know what other problem there might be, but just talking about your depersonalization should be a start. He may ask questions about your life and so on. Many people have some adjustments to make as far as dealing with emotions. It may not be pathological, but the earlier you deal with them, the better. That you would react like that to a trauma may be indicative of the need for some adjustments.
Take this episode as a warning sign.
As I see it, anything emotional, but especially of the fear kind can trigger stronger episodes when you are in it, or simply trigger it when you are not in it.
Like I said, it is a way to deal with negative emotions in the background.

I know this comment won't help you in anyway, but I just wanted to let you know I know EXACTLY what you're going through. I've had dp for two years now, experiencing the symptoms you described. For the first time in a while I'm thinking positively about life and everything, and I'm beginning to maybe think there is a way out.

Like I said, I know this comment won't help you in anyway, just good luck and know you will recover.

It's just weird to me because I'm not one to bury emotions. I was always very in touch with them and always expressed them verbally and through music.

I feel just like you, sweetie.

I can especially empathise with the thing you said about your vision being 'off', and it being worse outside. For me, it feels like I can't see. It feels like there's a glass pane between my eyes and my sight and it feels like there's a fog, and everything is 2D, and I just can't see!!

Also, my short term memory is out of whack too. Like something can happen 2 seconds ago, and it feels like I imagined it. My memories seem fake, and I feel like I can't remember anything.

I also feel like I'm 'dreamy/foggy' all of the time.

This $#%^ sucks.