Hi Duffy,
DG has given excellent advice as always. I cannot comment on the progesterone component of your HRT, as I had a total hysterectomy years ago so don't need it.
I am just writing to encourage you to start treatment for your vaginal atrophy as soon as possible, as it is an ongoing condition and needs lifelong treatment. I am about the same age as you (68) and developed VA a year ago. I too was affected by the WHI study, and my HRT was stopped in 2003.
I started using Ovestin in June this year, and although it worked to some extent I switched to Vagifem in September. This is much easier to use, the applicator is slimmer, and the product seems to be less inclined to provoke bacterial or yeast infections. Other folk on here seem to get on fine with Ovestin, but we are all different. My regime is similar to DG's, except that I use Vagifem daily at the moment as 2-3 a week did not keep on top of the urinary symptoms. I also use 2 pumps of Oestrogel daily, mainly for my bones but also in the hope that it will help with the VA. I still have Ovestin to use externally, and also some weaker generic estriol cream. The idea is to rub it into the vulva every other night, but I am not sure about this part of the treatment and can get sore when using it. That aside, I use Multi-Gyn Actigel when necessary, Sylk as a moisturiser, and wash the area with just warm water.
Things are not perfect, but there has been considerable improvement. Most days I can sit down comfortably, and can also wear trousers for a while as long as they are loose, but always change into a skirt when I get home.
I hope you can start treatment soon, and find some relief from your symptoms.
JP x