I took plan b with in 20 minutes of intercourse and this happened 5 days before my period. are my chances of becoming pregnant high?

Should be fine!: As long as Plan B is taken within 72 hrs from intercourse, you should be fine. This is especially true since you are past the time when you should have ovulated, 12-14 days before your period. So your chances of getting pregnant are slim. I recommend you talk to a provider about getting on birth control since Plan B is only for emergencies.

No: Intercourse was during a low risk period. Plan B can reduce chance of pregnancy by up to 95% when used within 24 hours. Consider a regular form of birth control.