Set Menstruation Day for a Woman Taking Contraceptives

When a woman is taking a contraceptive (and has been taking it for several months), is it necessary to abstain from intimacy during “onah beinonis”, “onas ha-chodesh” and “haflaga” (average, monthly and precedent time of the onset of her menstrual cycle), or is she considered as someone who doesn’t menstruate?

Greetings,
If it has already been proven for three months that she does not get her period while taking the contraceptive, she does not need to abstain on the day of the expected onset of her period at the time she’s taking it.