I took Plan B about a week ago. I have VERY sore breasts, bloating, cramping, and constant lower back pain. I had sex with my boyfriend without a condom but he says he pulled out on time. Just to be safe I took the emergency contraceptive within 36 hrs. I am suppose to start my period this Monday/Tuesday and I am so panicked. Can someone help, it's all I can think about. I am experiencing all these pregnancy symptoms, does plan b do that? I have never taken birth control and mind you, that was my first time having sex