Yes, you can take a second emergency contraceptive pill if you've had another exposure to unprotected sex, such as a burst condom. It works best the sooner you take it after the incident, and taking it a second time in the same month does not carry extra risk beyond what a single dose already carries.
Next Steps
Take the emergency pill as soon as you can today for the best chance it works. Expect your next period to arrive a little earlier or later than usual, and do a home
pregnancy test if it's delayed beyond a week.
Health Tips
This isn't meant as a regular contraception method, so please talk to a gynaecologist about a reliable ongoing option to avoid repeating this.