Morning. Your GP should be prescribing appropriate HRT if U don't want to go the ADs route - which do work if they are targeted at anxiety .
There is no such thing as 'early menopause'. Do have a lookC at the Daisy website, for those going through 'early' menopause. Medics don't seem to realise that some girls have a few periods then nowt, ever; others, rarely never menstruate. Some women begin peri symptoms from i.e. mid-30s so there really isn't a real though GPs seem to stick by the mean age of 52!
Keeping a mood/food/symptom might help. Is there a Nurse Practitioner in your Surgery who will know a little more about peri etc.? You R not losing your mind: brain fog is common during pregnancy and menopause. My head feels muggy all the while

If U feel that the current contraception helps, mayB keep with it until you have had proper advice from someone in your Surgery. There are dedicated menopause Clnics but waiting lists are long, both on the NHS as well as in the private sector. Though it is often good to get onto a List the appt can be canceled if U do not require it when it eventually arrives.
NICE suggest HRT as the 1st route for those with intermittent bleeds, aches and pains - often due to a loss of oestrogen.