Have you or anyone you know got a BP machine? You should check your blood pressure when feeling this way.
Progesterone can lower your blood pressure - this is frequently seen as beneficial however for individuals with lower blood pressure to begin with or who are particularly sensitive, it can be problematic.
I would try the estrogen on its own for two weeks. This isn't harmful and will help you establish if it was the progesterone or not.
If it is, there are multiple other options.
If not then you can scratch that off and consider other causes.
Oral estradiol can also provide a bit of blood pressure support whereas transdermal doesn't, so that might be something to look into as well.