my girlfriend is on birth control and the pack before the one she is currently taking she lost with 10 days left so she had to start over with a new pack. she now has 8 days left in her pack. the birth control is a 28 day pack. today we had sex and i came inside of her. she then went to the bathroom and said that she might have been bleeding through and that most of the semen came out. she was spotting for the last 20 days since she started the new pack. should i get plan b?