My understanding is that we should all be getting an annual check by a specialist because we're at an increased risk of developing vulval cancer. I go to a clinic at my local hospital to see a consultant gynaecologist. But my medication - Eumovate cream - comes via my GP, who just writes a repeat prescription when I need it. One doctor I saw at the hospital also suggested using E45 cream, which I do sometimes, and it can be enough.
For using the cream, were you told once a day for a month, alternative days for a month, then twice weekly for a month? When mine's been at its worst, that's made a great improvement, and then I've only used the cream occasionally.
My impression is that once we have the condition, it's going to be a lifelong condition, so in that context, your worries need addressing, including how it affects having sex and what this means in relationships. But you'll have to raise that with your GP and the consultant - I was only asked about sex at the first ever consultant appointment! I think you're entitled to have a referral on to a specialist in psychosexual conditions, but if your GPs are like mine, you'll have to ask and possibly ask and ask again for help.