Can a girl skip her period by swallowing sperm?

Can I get pregnant?: If i understand your question you are asking that if you had oral sex and ingested the sperm and seminal fluid can you get pregnant? The simple answer is no. Your period should not be affected by oral sex, even if you swallowed his semen.

No: Not sure how this "logic" would even occur, but sorry, cannot alter female physiology with "male protein shake." can still be at risk for std, though. Use caution.

No: Pregnancy requires intravaginal delivery -- it's at the other end of your body. If you're going to have any kind of sex, it's in your best interest to learn some basic facts.