Hi, I also think 25ug is very low. I am BSO and on 75ug, it took a month really for things to start to settle, I started on 50 and that was not quite enough, feeling faint etc. I didn't start until 2 weeks post surgery as consultant didn't feel I needed it!! Then went into melt down and started on Femoston initially, I think I did feel worse before I started to feel better though.
Good luck!
Rhiner