Hi Julieg, welcome to the forum!
So sorry to hear you have been taken off HRT and that you are now experiencing VA. If you are using Vagifem "as prescribed" I suspect that is only twice a week, which is probably not enough. Many of us use more than that and the latest BMS recommendation is up to x5 per week. Some folk use it daily. Vagifem used to have a 25 mcg dose, so you can see why 10 mcg twice a week is not enough, only 20 mcg as opposed to 50. My advice is to do a two week reload and then use every other night. You could also ask for a prescription for an oestrogen cream to use externally on the vulva, either Ovestin or the weaker Estriol Cream.
As to Vagisil, a kinder moisturiser with less chemical stuff would be better. The Yes products are best, have a Google for them. Another good one is Olive & Bee - just olive oil and beeswax.
If you have Facebook, there is a private Vaginal Atrophy Facebook group run by Jane Lewis (Maryjane on here), it is well worth joining. Jane has also written an excellent book called "Me and My Menopausal Vagina", essential reading for all sufferers! I think Amazon sell it.
Were you not offered transdermal HRT, which has far fewer risks than oral?
Best wishes,
JP x