Betnovoate is very potent.
During my MEGA va journey , it was suggested by a gynae to use 1% hydrocortisone ointment from the chemist , it is very weak.
There is also available 0.5% only on prescription odd.
Look on the web and 1% is recommended by lots of vulva dermos.
You could do ovestin in the am and hydrocortisone in the PM.
HOWEVER this is advise for me , but in my none medical opinion and what I have researched sorts lots of ladies out , also may be worth trying a antihistamine for a few nights ?