Thank you for your kind words.
It is common for women using
Mirena to experience staining instead of a period, or even cease menstruating completely.
If you only experience staining, and not an actual flow, you may take precautions against becoming
niddah from the staining, even if it is your expected monthly “period.” You should wear
colored underwear or
disposable pantyliners, and wait at least a few seconds (ideally 15 seconds) after urinating before wiping. This way, you may disregard any staining you find on the underwear/pantyliner/toilet paper, even if you know the stains are red. We also recommend abstaining from intercourse until the staining subsides.
Vesatot are only calculated from an actual flow. Therefore, even if you considered yourself
niddah from the staining last month, you are not required to calculate a
veset based on that staining.
Please feel free to get back to us with any further questions.
This response has been updated to reflect the rulings of our current Rabbinic Supervisor, Rav Kenneth Auman, regarding waiting before wiping.