Hi and welcome to MM Peterspots
Bladder problems are actually more common than is thought - particuarly when we hit the menopause.
Do look at the thread I started some 18 months ago - 'The Burning Club'.
I have burning urethra on and off and have done for the last 15 years or so.
Local oestrogen treatment like Vagifem, Gynest or Ovestin may well help but I am using both full systemic HRT and Vagifem to keep things comfortable. Vaginal moisturisers can also be helpful.
Keep posting. DG x