If i take my birth control consciously and around the same time each night and i have sex with out a condom and he doesn't cum in me how possible is pregnancy?

5%.: Even with optimal use, oral contraceptives have a certain failure rate (5-8%). Employing the pull-out method (coitus interruptus) is not an effective means of contraception (up to 30% fertility per cycle) and is not recommended [pre-ejaculate fluid releases sperm cells into your vagina before he can pull out]. Take Folic Acid 1-5 mg daily and consider iud as a more effective (99%) contraceptive.

Unlikely: It is unlikely that you would conceive in that circumstance.