Lottie, what patches were you on before?
If they were the combined patches with synthetic progestin, I can see why they might have taken you off. Unless you really need it, it's best to avoid synthetic progestin.
If they were just estrogen patches with separate utrogestan then I don't understand why they have put you on something different instead of back on that...
Anyway, with the utrogestan, whenever you bleed is day 1 of your cycle. Start utrogestan on day 14. If your next cycle happens sooner and doesn't allow you to finish 14 days of the utrogestan, stop the utrogestan when you get it and on the next cycle start it earlier than day 14 so you can get the full 14 days of it in before you bleed... And if your cycles are ages apart or very irregular and you are in late peri, you are probably better off taking it continuously with just a 5 day break to schedule a bleed instead.