I think bombshell is on the right track. The Femseven and synthetic progestin isn't great for you, anyway - plus isn't even working to control bleeding.
I'd switch to an E only patch and then you can either get the Mirena fitted by gynae (eventually) or you can use utrogestan vaginally at higher doses, or you can use the regular dose of utrogestan and add in desogestrel POP. Even the usual 75mcg dose of desogestrel should do the trick and it is licensed to be used with HRT for contraception anyway, so you're not doing anything off-licence or weird there....