no it cannot. it goes through your digestive track.

courtkrueg12 is absolutely right. The digestive and reproductive systems are not connected so there is no way for sperm to travel from your mouth to your vagina.
Since you seem a little confused about how the reproductive system works, I recommend that you review this post. http://ehealthforum.com/health/topic66662. html
I just made my niece read this post to clear up any myths she had heard about sex and pregnancy. I thought that it was very helpful.

thanks deteragram