The bladder has oestrogen receptors so when meno hits, even if there isn't obvious atrophy present, the bladder will suffer and not function so well. Vagifem will help this as it can deliver the oestrogen better to the bladder and urethra. I think the oestrogen creams work better for external areas.
Once you start using Vagifem, it can take some weeks, or even months, for the benefits to take effect. I experienced what you have right now in my early 40s when I had gone into post meno, - though I was on systemic HRT it didn't stop the bladder issues. Local oestrogen wasn't given at that time and I suffered for years on and off till I moved house and the local practise nurse at my new surgery started me on Vagifem.
I had worked out fro myself about local moisturisers, Multi Gyn Actigel and using bicarb of soda. BTW - you can buy bicarb of soda at the super market as it's just what you use for baking. Do use coconut oil as it can be soothing as well. I sill think you are suffering from a total imbalance of your flora. DG x