When you say "enough" progesterone for that amount of estrogen, that dose would usually be considered adequate for endometrial protection with a 50mcg patch.
This doesn't necessarily mean it is enough to prevent any spotting at all.
You may be a poor absorber and require a higher progesterone dose to keep you bleed free.
I assume you are taking it every night.
Medically the first option would be to increase your progesterone to 200mg every night.
Alternatively taking it vaginally can work as this bypasses the gut and delivers it preferentially to the uterus. This is off label in the UK but increasingly supported by specialists.
I have just realised something else, you are on femseven - a 7 day patch? That is a long time for a patch to last and whilst the manufacturers claim it delivers the same amount of estrogen over the whole week, in reality it may well be flagging after 5 or 6 days. Especially if it is starting to detach around the edges.
The drop in estrogen as your patch comes to the end of its life may also be a cause of spotting, and it may be worth just for a trial either changing it sooner or looking at a brand that is worn for less days.
