Using a pill to regulate one's period
Q:
1. Is it permissible for a woman who has irregular cycles to use the pill in order to regulate her cycle so that she may be pure for her Nikah?
2. If she does not, and her menses begin on the day of her Nikah, what should be done?
3. If she is in her menses on her first night, when should her husband lead her in Salaah as is advised to do on the first night?