Hi Patsie, welcome to the forum.
Did you do the initial 14 day loading dose of Vagifem? They tell you to drop down to twice a week after that, but for many this is not enough. The dose recommended by the British Menopause Society is now every other day or up to 5 times a week. You could try doing a reload and then drop to whatever dose suits. You could also ask to try Ovestin instead, which can be used internally and also on the labia.
You can ask (or tell?) the GP to refer you to a menopause clinic on the NHS or, if you decide to go privately, make sure you see a menopause specialist, not just a gynaecologist. GPs and even gynaecologists are not often clued up about meno issues.This certainly includes GPs who purport to be specialists in women's health. The one at my practice told me "HRT is very dangerous". She obviously has no training in this area.
The exterior soreness may be helped by a vaginal moisturiser. The best ones are the Yes products, pH matched to the vagina.
JP x