Hi Liz, and welcome to the forum.
Wel, if it were me, I'd go for HRT. As well as dealing with the hot flushes, which could go on for years, it will protect your health for the future. Also, you should at least be using local oestrogen for your VA symptoms, as this will deteriorate if left untreated.
As to potential side effects, we see posts here about people having problems because of the nature of this group, ie, it is mainly a support group. Most people are fine, use HRT with no problems, and have no need of support groups.
I'd give it a go, no need to suffer unnecessarily!
JP x