My girl started the birth control pill about a month ago the day she had her period but for some reason it extended her period a extra week longer than normal, so her doctor told her to stop taking the pill and wait until the bleeding stops. After her period was period was completely over we had unprotected sex 4 days after and she started back taking the pill that next morning. Is it possible she can still get pregnant if she consistently continues on taking the pill? 

Need answer ASAP PLEASE!!!