Budder, if you were taking 100mg Utrogestan vaginally before, I can't for the life of me think why you have been prescribed 200mg Cyclogest, particularly if you were unable to tolerate 100mg Utrogestan, it makes no sense whatsoever.
Personally, I would try taking 50mg vaginally and see how you get on. How well it will work long term depends on how much oestrogen you take but you will not harm yourself by trialling 50mg for 14 days for one month just to see how well you tolerate lower 50mg dose. If you find it works, you get a decent bleed and you tolerate that dose, you can then have a transvaginal scan in a few months to check your womb lining and make sure you are getting good clearance.
What dose of oestrogen are you taking?