My boyfriends condom broke, and I’m not very consistent on my birth control. I realize I made a stupid mistake and I took Plan B on the fourth day after we had sex. Before I took Plan B I was worried I had implantation blood, as it was lighter than my usual periods. I am very worried that I am pregnant but it’s only been about a week since the actual sex. Could I be pregnant? Or because I took Plan B should I be okay?