You sound like me!
Tibolone is also bioidentical from yams, it sounds like a bioidentical form of DHEA so may cause similar issues if too much goes down the oestrogen pathway.
The vaginal oestrogen is much safer of course due to the small amount but when you’re sensitive, you’re sensitive to the slightest amount. There are some anecdotal reviews on that site that Vagifem gave them a dangerous womb lining but it doesn’t make much logical sense.
Tibolone is synthetic, this is probably why it isn’t the first choice of treatment for GPs.
Tibolone has four features which make it different from conventional hormone replacement therapy. These are: (1) it is a synthetic molecule, (2) it has different activities at different tissues, (3) it is a non-bleeding hormone replacement therapy, (4) it has androgenic activity.
Tibolone is a synthetic steroid that is structurally related to the 19 norethisterone derivatives, such as norethynodrel and norethisterone
https://www.sciencedirect.com/science/article/abs/pii/S1471769702000175#:~:text=Tibolone%20has%20four%20features%20which,4)%20it%20has%20androgenic%20activity.
It’s not about amount of estrogen in vaginal treatment, it is about ingredients. I tried patches and gel, in different doses and had the same result. The same time I don’t have any problems with synthetic Mirena, so why not to try synthetic estrogen? If my theory is not right and it’s not bio identical hormone causing the problems for me, then just estrogen (any) will be blamed.