there are plenty of options for VA treatment, your GP needs to update her (lack of) knowledge.
Vaginal atrophy mimics repeated urine infection-type symptoms really really well which is why many GPs reach for antibiotic treatments. The idea is to. use treatment every night for 2-3 weeks then when necessary: some ladies need it every night for a long time as well as a mostiorisor. I have 'estriol'ovestin' internally with a smear of it on the outer labia or I use KY jelly there. Some find YES VM helpful - do read the various threads here. Make notes ;-)
Some require HRT as well as localised treatment in and around the vagina. So using both can make a big difference.
Initially I would ask for a referral from your surgery to a dedicated menopause clinic. There are waiting lists both on the NHS and in the private sector, once seen a treatment regime can be sent to your GP to support your vagina's needs. Hopefully more GPs will begin to work with rather than be stuck in a box of "U can't use X, Y, Z together" because we cannot over dose on oestrogen.
Your GP is totally out of date with regards DVT unless you have a history in which case she should be referring U, as above.
Some find that keeping a mood/food/symptom diary of use. Whether we R/not sexually active is irrelevant to VA which is due to loss of oestrogen. This may cause the body to become dry: inside and out; scalp, skin, deep in the ears, nostrils, eyes ..... as well as muscles may become lax = aches and pains.
Don't panic. How often are U inserting the 'ovestin'?