me and my girlfriend had sex and i was 100% sure i ejaculated inside of her. we took a plan b pill and its been about a week. she hasn't gotten her period yet but after talking we are choosing to begin our family. This is the first time we ever took a plan b pill, but we are concerned that we may have lower our chances of conceiving. will the plan b pill have any negative effects on fertility ad should we wait until after her period to start trying to get pregnant