I had an unprotected sex with my gf yesterday that is on 11th September, we had a short term intercourse and I am sure I did not ejaculate inside her, yet on erection as it normal there was some pre-ejaculation, which came in contact while intercourse. My gf had her periods immediately today morning that is on 12th September her date was supposed to be 5th September. What should I do, should I recommend her to take i-pills or unwanted 72, is it okay to take these pills while on periods, what is the dosage, and is it required now to take pills as she had her periods?