It's worth learning how your menstrual cycle works. You are not fertile during the first 5 days of your period. Pregnancy is not possible. You are likely to get a lot of hormonal side effects from the emergency contraceptive pill you took. That is what you're experiencing.
Subscribe to receive email notifications whenever new articles are published.
Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. Data sources include IBM Watson Micromedex (updated Dec 6th, 2018), Cerner Multum™ (updated Dec 7th, 2018), Wolters Kluwer™ (updated Dec 5th, 2018) and others. To view content sources and attributions, please refer to our editorial policy.