Hi Bellamy - Welcome to the forum.
You are not alone. I think I might have been a bit like you.
I hadn't thought about meno at all. I stayed on the pill till I was 54, long story, but oestrogen did give a definite benefit (regarding a health condition of mine - MS). However there were lots of things going on which should have indicated menopause (crabby and panicky, brittle nails and hair, lots of UTI type things, oh and very dry down there). I just didn't realise.
After I stopped the pill the menopause symptoms came out with a vengeance, hot flushes and moods fit to murder. I had my FSH tested and while it isn't foolproof it did show menopause, on tests 6 months apart .
It sounds stupid, but because I had been getting a monthly bleed, menopause hadn't occurred to me.
Do speak to your partner. Mine surprised me, he had guessed it was the meno, (he didn't mention it to me however).
Anyway, do explain, he will probably understand. Even if he doesn't, it's just the way it is.