Hi shellb
As you are on the progesterone phase then you only need to take for the length of time for this ie the 14 days. So depends whether you only have two days left for the prog or 7 + 2 = 9 days?
If only two days left you could probably just change to the oestrogen only - but it might put your cycle a bit out of sync ( but maybe it was irregular anyway?). If you've got 9 days left then put the other prog patch on for a week - or try to make it last for an extra day, then change to the oestrogen only.
If the worst comes to the worst you may need another patch to make up the time - hopefully the practice allowed for this in the prescription otherwise it can get a bit expensive and inconvenient to keep going back for more!
The main thing is you need the prog for a certain length of time to keep the lining thin.
Hurdity x