Chances of getting pregnant when 1 it was your first time 2 he pulled out 3 it was a few days after your period?

The chances of becomming pregnant and still very large. The only 100% effective way to not get pregnant is to not have sex. If you choose to have sex then use a condom and or oral contraceptives. Not using condoms can lead to transmission of std's including but not limited to HIV, Herpes, Genital Warts etc.