My last period was july 17-21. he came in me for sure aug. 6-7 and twice aug 11. i am now bleeding a week before expected period could i be pregnant?

Maybe. Maybe not.: If worried about pregnancy, one can do a home pregnancy test, but not too soon. A urine pregnancy test, done correctly, gives a reliable result 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon, and thus lead to a repeat test.