At some times in your monthly cycle, the chance of you becoming pregnant are greater than other times but there is NEVER a time when it's not possible if male sperm enters your body.
Yes, you can get pregnant under the circumstances described in your question. You need to read the nine links at the bottom of the web page below and make sure you understand all of that information.
Planned Parenthood
http://www.plannedparenthood.org/info-for-teens/pregnancy/am-pregnant-33831.asp
Answered Dec 23, 2011
Edited Dec 23, 2011