Hi elainediva - I answered on your Late Menopause thread - I didn't realise you had posted separately. You don't need to go to the doctor. Only if you continue to have heavy bleeding well into mid/late fifties (when you might need to be checked for fibroids, thickening of womb lining etc), or if you go 12 months without a bleed and then have one suddenly (called post-menopausal bleeding), or other obvious problems like pain etc.
If you need relief from symptoms then you will need to see GP - eg for local oestrogen like Vagifem - for vaginal and bladder problems), or HRT if your flushes and sweats are severe.
Hurdity x