Have all your urine samples been sent to a Lab to check for growth? VA mimics urine infection-type symptoms really really well!
Get some Vagifem up there this afternoon and another dose this evening. Take a pain relief - I use 'nurofen' , two capsules 3 times a day to ease that nip as the spincter closes at the end of a pee. Drink plenty, your urine should be straw coloured, any lighter and you are drinking too much. Don't forget that we absorb fluids in our diet too. ;-).
My paternal Gran swore by bicarb 4 many things including small burns from the cooker
. Me, I never fancy it in water
but it can help.