Sex after period ends

Dear Ask The Doctor: If i had safe sex after the day my period ended, should i be worried about being pregnant?

Dear Channel:

I understand your concern about pregnancy after the first day of your menses. Let me reassure you that your ovum is not ready to be fertilized yet and you should not worry about unwanted pregnancies.

Usually if your cycles last 28 days, the most fertile days or dangerous days would be the second and third week of your cycle. I hope I cleared your doubt.