My thoughts exactly. Bipolar cycles -- it's the nature of the beast.

BPD goes back and forth with extremes of emotion and is that way consistantly (consistantly inconsistant you might say). Also, it is driven by interaction with others. The way one feels is reactive. (Someone says/does something and it sets off how you feel.) Something happens, and boom! instant (over) reaction. It also brings on a lot of assumptions regarding motivation (this or that happened/didn't happen = they must hate me! Etc.)

Anyhow, I'm sorry to hear that it's so hard to get in to see a Pdoc there. Alas, GPs are almost invariably out of their depth in psych issues. In the meanwhile or whatever, you may want to check into something called DBT (dialetical behavior therapy).

I live where there aren't psychiatrists either.
I drive to a city to see my psychiatrist. It's 2.5 hours each way (I maybe could see someone closer than that if I could find a Medicare provider who accepts bipolar patients--the last time I tried to find someone closer (an hour) I was turned down in 5/6 places and the 6th place put me on the waiting list. It's been 12 years so I'm thinking they are maybe not going to call me back? ).
Is there any chance of going to a city and at least getting a firm diagnosis and some suggestions about treatment? Even if you only went once or a few times you may gain something from it.

Welcome!
As for Seroquel, I was practically a zombie on it. I eventually adjusted to it and didn't sleep as much, but at first, I could've slept 20 hours if someone let me. I didn't notice overheating. My biggest side effect was increased thirst/dry mouth. I gained about ten pounds really fast on it and then didn't gain anything after that.
My memory is definitely affected, but I'd agree with others that it might be the sleep issues so many of us have.

I'm gonna call your GP out on this one. This doesn't sound anything like Bipolar Disorder to me. I'd bet every penny I have on this being Borderline, and I don't gamble (obviously, I can't actually diagnose you). Is there any way you can get a second opinion from a pdoc? Even one or two visits might help. You'd probably have to pay out of pocket, but it could be worth it. Seroquel is a heavy drug to be taking when you don't know if you even have Bipolar. I wouldn't trust a GP with that kind of medication, and I don't think they should be allowed to diagnose Bipolar (personal opinion). And yes, it will make you feel like a zombie every time you take it.

Do you happen to have access to a therapist? While Bipolar Disorder is primarily treated with drugs, Borderline is usually treated with long-term psychotherapy.

Lots of great advice given. Of course none of us can diagnose , we just go by what we have learned ourselves. It's very common to be BP and BPD its a very common combo, Brings up the suckiness level for sure. Bp typically is a mood swing that last at least 1-2 weeks minimun. BPD is a in the moment swing, highly emotional happy to flipping your shyt in 60 seconds is the trademark of BPD.
A bipolar that doesn't cycle ? Bwhahahahh yeah , Nope not a thing at all.

Seoquel? yeah it will slam you into a sleep coma, especially if you have been getting little to no sleep. Sleep coma is a good thing, Did the same to me years ago. As for all the nasty lil side effects that is possible well, you need to probably weight the pros and cons once your more rested and thinking a bit clearer.. so unless hitting side effects you just can not handle.. Just sit with the medication for a while..... few weeks at least. It is a heavy hitter.

CBT and DTB is so helpful and the latter is really the only treatment for BPD. So while waiting to see a Pdoc get in to a therapy setting or just a support group. Anything can help . Get educated, YOU need to be your own best advocate.

Most of what you described is Borderline related. Have you tried DBT yet?

Seroquel will sedate, 200 isnt that large a dose for XR you can easily function on it if you need it, if you dont need it, it'll make you sleep a lot. Gave up watching my weight on seroquel or zyprexa, doesnt matter what you do unless you are really lucky you are going to gain weight. Seroquel munchies are like nothing on earth but XR isnt so bad, especially at such a low dose.