Your GPs are remiss in not realising that you have developed the very common vaginal atrophy, any woman with more than 2 urine infection-type symptoms should be prescribed vagifem, or estriol etc..
This lasts for life so appropriate treatment is necessary. The idea is to use the product every night for 2-3 weeks then as necessary: many require nightly treatment regardless of what is written in the leaflet in the box and regardless of what many medics continue to believe! There are good moisturisers too: yes, sylc, a smear of estriol on the outer labial area as well as continued use of VA treatment. I've found estriol inserted in a plastic applicator which can be washed, has kept my symptoms under control.
When they niggle I swallow 'neurofen' until the nip goes away! Let us know how you get on with that one.
As for an HRT Clinic: mayB read the websites of your local Hospitals as there are often Clinics attached ......... it is better to see a dedicated clinic as obs/gynaes often don't know much more than GPs seem to do!