I am brand new to all of this and could sure use some friendly support!

I've done some internet research and I strongly suspect that I am pre-menopausal. I'll be 37 years old in January and I know that's young. This past year my periods have been very irregular. I bleed heavy and long. My periods last from 10 days to 2 1/2 weeks. I frequently only get about a week and a half off a month. (had a D & C - everything "normal".)
Then about 3 months ago "it" hit!!! I've been in a whirlwind of symptoms and I don't know which way to turn. Each month seems to have a theme. The first month I became "***** woman"! Honest! My head started spinning and everything! I was crying, raging, depressed, the whole nine yards! My poor family was caught in the middle of my storms! My 4-year-old daughter and I have agreed to call it the "crazies". It's our code for "Oops! There goes mommy's hormones again! It's not you sweetheart, I love you and bear with me, I'll be back to normal soon!"
The next month I seemed to handle the emotions better but I had EXTREME fatigue! I have never had such fatigue except for a few weeks when I was pregnant with my son (now almost 2 years old

)It was so frusterating to need the energy for my young family and not have anything to give.
This third month the theme has been achiness. I feel like I have the flu all the time. I don't have a fever and I'm not sick but my muscles ache just as if I do have a high fever. Most nights I have to take Ibuprofen and a very hot bath just to be able to sleep. I know that anxiety is another symptom of premenoupause. I've been very anxious over the symptoms and keep researching the internet for answers. I even worried I had fibromyalgia but my achiness is just flu-like, it's not what I'd actually call pain. It's very frusterating and depressing to have it day after day and I keep saying "SURELY THIS CAN NOT BE NORMAL!!!" I don't feel normal! I'm tired of not feeling like myself! HOW LONG DOES ALL THIS LAST? I know there are no real answers and yet I desperately need answers!
Also, can you be perimenopausal and not have hot flashes or night sweats? I've not had either one of these and they seem to be the primary "initiation ritual" of the "Pre-Menopause Club". So many questions, needing so many answers! Thanks in advance for all your support!