Possible DID? (trigger warning)

I'm 17 years old (almost 18) and am living at home for the summer (I'm a college student), although CPS was called and is supposed to come by my house sometime in the next few weeks.

I have memory issues, both long term and short term- I can't remember entire years of my childhood, and I have difficulty even remembering things that happen recently. A lot of times I'll go to do something and then sort of lapse, and I can't remember what I did, where I put certain things, etc. It even happens when I'm not doing anything. I end up staring at something and realizing that 10-30 minutes passed without me knowing. I also often have trouble distinguishing whether I did something or not and whether something that happened in my dreams happened in real life or vice versa. I have issues recognizing myself in the mirror and I always feel like there's a mist between me and everything else.

***Trigger warning - abuse, suicidal ideations***

My parents are verbally/emotionally abusive to me (and my sister is physically abusive, in addition), although I only just realized this recently. I have been diagnosed with major depression and anxiety, and I see a therapist (although she's not very good). When my parents are yelling at me, there's usually a point where I feel like my vision glazes over a bit and I can barely ever remember what they say after that point. After about an hour or two after I'm back to normal, and I downplay anything and everything that happened to me. The only reason I even realize that they're abusive is because I've taken up the habit of texting my really close friend everything they've said as soon as I can, because it's the only way I'll remember. Her mom works for CPS, and she's the one that made a report about my family, as well as my therapist. Other times, when I'm particularly distressed I sort of "switch" and become very hostile towards myself and almost gleefully suicidal. I usually remember those times, but not always.

***End trigger warning***

At the moment I can't see someone to get a diagnosis, as my parents say that I'm just a forgetful airhead and that I'm 'stuck living in my own fantasy land', but can anyone give me some insight? Do you think this is DID or something else?

I think you should talk to CPS. They can help you locate other support resources including an expert evaluation. An evaluation takes at most a few hours and therefore does not cost a huge amount of money.

Soon enough you will be a legal adult and you will be able to make health care decisions for yourself.