I've never had nausea with utrogestan although the French leaflet recommends vaginal use for those who suffer these side effects such as dizziness through oral route.
I agree that the effects are often felt immediately due to the sudden increase in progesterone - wheareas endogenous progesterone produced by the ovaries during the menstrual cycle will increase more gradually. Side effects do often settle, although for some women some undesirable effects only become manifest after a few days as it builds up in the system. I get vivid dreams on it too, although having said that I had very vivid dreams last night!
If groggy/tired is the only side effect - then that's great because one can generally cope with that! It's some of the other sdie effects and especially from the synthetic progestogens (headache, very low mood etc) that can be challenging.
It's a mistake to think that the search for the perfect HRT means having no side effects at all - after all we have lived through hundreds of menstrual cycles and so as long as the side effects through HRT are no worse than this (or not so bad for those who suffered terrible pms) - then that is the best we can hope for - as long as we feel better overall for most of the time compared to when not taking it
Absolutely! Seven days is a very short time to take it - so just take each day one day at a time and you'll be there in no time
Hurdity x