Hi yesterday night me and my boyfriend were having sex but one time when he entered me we heard a voice but we thought it was nothing so we kept on going for a few seconds then he pulled out. That's when we realized that it had broke. He did not come at all and it was a spermacidial condom. I have been taking birth control for 5 months and haven't missed a pill. I am on the third week of the current pack. Do you think I could be pregnant should I get planB?????