Hi Looby, I'm a bit confused that you say you've felt menopausal since puberty but have had 3 children? Have you had massive hormonal fluctuations?
In addition to the joint pain and fatigue you mention, Menopausal problems can I nclude hot flushes, sweats, very disturbed sleep, brain fog, anxiety, urinary problems, weight gain especially around the waist, loss of libido, and vaginal atrophy.
Zoladex will definitely put you in a menopausal state but you have to be absolutely certain that's what you want. Every woman has a different experience of menopause of course, for some it's not too bad but for others it's pure distilled hell.