I had sex yesterday in the morning with my bf & he cum in me now today i got my period so can i still get pregnant & when can i take a pregnancy test?

YES: Do a pregnancy test at home. I would advise BC pills PLUS condoms and the use of spermicidal foam, jelly or vaginal inserts. Time to see your GYN and protect yourself against pregnancy and STD

No, not at that time: A girl cannot get her normal regular period and be pregnant at the same time. However, she can get pregnant a week or two after her normal period. If she has some spotting or light bleeding that doesn't look like her normal regular period, she can check a urine pregnancy test about 3 weeks after sex (3 weeks after when conception might have happened) to see if she is pregnant.