It's a different type of oestrogen replacement so try not to worry. The idea is to use the product for at least 2 weeks every night: if there is stinging initially it's because the tissues are dry, so mayB you might get on with every 3rd night until the area softens.
I find 'ovestin' useful, internally and around the labia. Others use 'vagifem' [I think
![Undecided :-\](https://www.menopausematters.co.uk/forum/Smileys/extended/undecided.gif)
] internally along with 'ovestin' or other moisturisers around the outer areas.
Let us know how you get on ?