I so lovvvve your name, NotReady!!
First, welcome to PS! You'll love this place, and wonder what you ever did without us!

I am concerned tho that you were diagnosed with "early menopause" at barely 30 years of age. You didn't get real specific, so not sure, other than the test that showed estrogen low, how your doctor determined this. Hormones fluctuate wildly for all different reasons. You can be low on one day, and not on another. Sometimes (and I say SOMETIMES) throwing out that diagnosis lets the doctor off the hook for determining what else could be wrong. I'ts an easy lable to toss out there.
I am not a doctor, and there are people here at PS wayyyy more experienced and qualified than I (Help Dearest!), but I don't think I would just lay down to that diagnosis, knowing now what I know about doctors, and this whole perimenopause experience.
I think you should explore this site BIG TIME, and maybe once you have a little more information under your belt, go back to the doctor. I would start reading the "Ask the Experts" archives, and doing searches on early menopause. You'll find the "Power Surge Quick Links" at the top of this page to your right. You can start there.
Now for what I DO know.... YOU ARE NOT LOSING YOUR MIND. When you go to the "Recommendations" you will find some tips on how to help alivate some of your symptoms.
I'm sorry you feel alone, because, truly you are not. There are over 13,000 women on this site that understand, and are sympathetic to what you are going through.
And the "Oh it's no big deal, everyone goes through it" remark... well, that's not entirely true in your case. Most 30 year olds are not going through this right now.
RESEARCH, LEARN, AND EDUCATE yourself, because if in fact you are in early menopause, there are a lot of things that at the very least can HELP you.
You take care, and keep in touch!