Had sex with my boyfriend two days after my period which is the 13th of every month, used a condom didn't break and he pulled out can i be pregnant?

Its possible...: Anytime you have sex, there is at least some chance of getting pregnant. Right after period finishes is risky. The risk of pregnancy, using condoms is about 20% per year. Adding the pull-out method will lower that a little. If you don't want to get pregnant, you should use a more effective method of protection such as a Depo Provera (medroxyprogesterone) injections or birth-control pills. Best wishes!