I had Protected sex with my BF on February 8 and I am not suppose to be ovulating until today but I took plan B 12 hours later. He had ejaculated earlier from the oral sex I have him but not inside me and we always wear condoms but this time it broke. I was afraid that the semen left from his previous ejaculation could make me pregnant so I orb planb. Now I have been cramping for 4-5 and my left breast is a bit sore. Could this possibly be a good sign that plan B is working ? I've been freaking out ever since and I'm suppose to get my period February 21st. Also this is my second time in 2 months taking plan B. I'm hoping it won't disrupt my cycle.