@Sydney1000
We are all different but the trials and research done on drugs is done on hundreds and thousands of women. I don't have time to look for and link to that research now (I have in the past) - but you can try for yourself if you want to.
But what the research says is that within the first 2 weeks of using vaginal estrogen, there may be the minutest amount of systemic absorption. This is far far less than using HRT ( vaginal estrogen is not classed as HRT.)
After 2 weeks when the cells lining the vagina have changed back to their normal state, ( ie thicker) there is no more absorption, systemically. This is because the cells have grown a thicker cell wall, new cells have grown, and they cannot absorb vagifem.
Ovestin is 0.001mg estrogen. So, doing that maths(!) using it for 100 days ( twice a week for a year) = 1mg. That is one day of HRT.
There is no way anyone using 1mg of estrogen could have the side e effects some women think vaginal estrogen causes.
The symptoms you list are classic per menopause!
Spots, dry skin, palpatations, weight gain, problems sleeping.
You might find that lifestyle changes will help reduce these a lot- changing your diet, taking more exercise, etc.