Hi Minny
This is typical of many doctors Minny - as more and more women become knowledgeable about the different types of HRT, notably through the information on this website, they are often ahead of their doctors who, as general practitioners often lag behind in their knowledge.
There is nothing at all complicated about gel and utrogestan though! The standard dosage is given on this site (top tabs - Treatments/HRT preparations) which you could print off for your doc if you decide you would like to try. However you may well be fine on Femseven sequi ( if that's what you've been given).
She can't possibly say what side effects you are more or less likely to experience as we all react differently! Some women do not get on with any synthetic progestogen although many women thrive on all of these HRT types, otherwise they would not still be available. Utrogestan has different side effects - but again not everyone experiences them.
Hopefully you will feel much better once you start the HRT and are settled on it. Do try to give it three months at least before deciding whether it is the one for you.
Good luck and keep us posted
Hurdity x