If i take a plan be everyday if i had unprotected sex everyday would i be safe of pregnancy?

It's for emergencies: Plan B and similar pills are for emergencies. Women should not have such emergencies except rarely. That means a woman might need emergency contraception 2 or 3 times in her entire life. If a woman is taking emergency contraception pills several times a year, there is something quite wrong about her situation. A full evaluation by her primary care doctor can help. Nobody takes Plan B every day.