@alwaysneedhelp,
Me? I'm past getting pregnant.
Max is right; if this worries you so much, use a different, better method. Condom plus hormonal is great. If you can't use hormonal birth control (not everyone can; this is a question for your doctor), then investigate other options with him or her.
In the meantime, worry can make your period late. I realize it's easier said than done, but seriously, your chances of being pregnant are really low. Try not to interpret every little pain or itch as being a sign.