You can NOT get pregnant from oral sex. Peanut is right your mouth is not connected to your vagina. You CAN get pregnant if the man ejaculates into your vagina or if sperm is injected into your vagina.
You can not get pregnant by having oral sex or by swallowing. You don't need to take laxatives. It's ok to swallow cum, nothing will happen, trust me i know about these things even though i'm not a member of this forum i answer sex&relationship questions on Yahoo Answers.
What Ray is saying is wrong, there's nothing wrong with semen in your system. Obviousily he doesn't know what he's on about, i doubt he was paying attention in sex ed.