not sure what "oestrogen" is but my estrogen levels were high and my endo put me on a an herbal hormone supplement that contained DIM, green tea extract and some other ingredients that balances and protects from hormones (DHT, estrone, etc)
i'd go to an endocrinologist to determine just how "out of balance" your hormone levels are
i have not gotten new bloods yet to see if my levels are now balanced but am due for one soon
also i did not have any symptoms
so maybe your needs hormone supplement rather than herbal
although this is a guess
check with an endo
this is an easy fix