I'm 42 and have been though a medical menopause as treatment for endometriosis about 7 times in my 20s. It was not fun. Horrendous hot flushes, I'd go bright red if I spoke to anyone male
, big spots, sweaty as anything, insomnia, mood swings-such anger that would end abruptly in tears, headaches that put me in hospital, and I still had pelvic pain pain that required opiates.
I'm currently taking the combined pill 3 packs in a row to control my periods and pain as much as possible so am now period free. Pain still requires opiates 
My last period was Christmas I think. In the last year they had gone a bit haywire. 3 days of bleeding but sometimes 4, or 5 or 7 or 8. Pain lasted 3 weeks generally. One month I had two periods and was bleeding for 2 weeks on the second one and flooded for the first time since I was a teenager. I've never had heavy periods particularly.
Lately I've had a virus so could be that but I've woken up a few times wet through with sweat. Prior to this I'd sometimes wake up and have a sweaty cleavage (TMI sorry!) but certainly not like the hot flushes of my 20s. Also taking fluoxetine so could be a side effect although would have thought they'd be all the time if that was the case. But more moody lately as though the fluoxetine isn't working that well anymore. But could be brexit stress and this never ending virus that I've had for months 
I'm breastfeeding my youngest but only at bedtime mainly although he sometimes sneaks more in the day if unwell.
Basically I'm hoping for experiences of how you knew you were menopausal, how it started? For me those medical menopauses were sudden and aggressive as my ovaries were shut down in a few weeks. There was no natural depletion of hormones, just wham bam have some yams ma'am! (I took tibolone HRT which is made from yams
).
My mum had a TAH in her 40s so never had a natural menopause either so she can't help me on this. I know the average age is 52 and hormone blood tests are not very good at telling anything until you are well into the process.
Not sure how I'd feel if it was the menopause tbh. My family is complete so no issues there but there's still that finality of not being able to have more children. The choice is no longer yours. Hope that makes sense.
Sorry, I've waffled-it's the drugs!