The blood tests for thyroid and fsh/ oestradiol are real, and available!
Who is saying gps don't do blood tests? That's not correct at all.
If you need help with the perimenopause, go to your GP and get a blood test, no matter what age you are. Ask to be referred to a gynaecologist if needs be, and have further tests.
If your in perimenopause your fsh levels will be elevated, and oestradiol low.
Hrt is proven not to cause any more cancer than having a glass of wine a day or being half a stone overweight. NICE recommends it for cardio vascular health.
If you take it it protects bone density, and is essential if menopause is reached before 52. Hrt supplements your body with hormones you would be making anyway.
I take a bio identical oestrogen and progesterone as my levels have dropped off a cliff and I was suffering from insomnia, flashes and exhaustion.
The risk of taking bio identical hormones is negligible as I would have been making them myself anyway, except that I'm not.
I Use a transdermal gel for the oestrogen and take an oil based progesterone, so no "pills" of foreign chemicals. I got a prescription for this type of hrt, and it's filled in Boots chemist, but it's made from yams, not artificial chemicals. It's the one most used in France.
My life is immeasurably better since I've started to use bioidentical hrt. I feel normal again: I sleep better, the mental fog and exhaustion is gone, flashes gone, aches and pains gone, skin looks great, energy and libido is back.
Pop over to the meno board and find out a bit about it. There are some very well informed women over there, and knowledge is much better than fear and outdated opinion and hearsay which is too often bandied about