I take the birth control patch, and I sometimes use
You can use together.
Thanks for trusting us about your healthcare.
I have gone through your history and understand your concern.
As flunase is a steroid it can interact with oral contraceptive pill action.
It may decrease the function of oral contraceptive pills.
But as we use flunase nasally it's effect on systemic circulation is very less.
Hope found useful, feel free to ask more information.