Can Periods Be Occur After Having Norlevo?

i had unprotected sex about a month ago. took the norlevo 2 days after. about 5 days later after taking norlevo, i had my period for 2 weeks. the pharmacist said i must take my birth control pills on the day i have my period. so i have been taking them while i was on my 2 weeks period. i had another week to go until my pills finish. should i expect another period now? im on my one week break from the pills now